v3.26.1
Transactions with Affiliate Companies - Schedule of Fair Value Roll Forward (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [1],[2]   $ 5,819,755   $ 5,819,755    
PIK interest capitalized (cost) $ 5,391   $ 5,676 9,959 $ 8,821  
Net realized gain (loss)       (40,649) (1,640)  
Net change in unrealized gain (loss)       2,567 (10,560)  
Fair value at the ending [3],[4] 5,956,417     5,956,417    
Non-controlled affiliate company investments            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   308,170 [1],[2],[5]   308,170 [1],[2],[5] 145,755  
Transfers in (out)       (8,784) 0  
Purchases (cost)       95,051 101,207  
Sales and paydowns (cost)       (2,325) (2,306)  
PIK interest capitalized (cost) 1,710   562 2,881 1,079  
Discount accretion       149 142  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss) 17,119   (4,043) 6,782 (4,266)  
Fair value at the ending 401,924 [3],[4],[6]   241,611 401,924 [3],[4],[6] 241,611  
Non-controlled affiliate company investments | American Community Homes, Inc.            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       18,604    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       300    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (359)    
Fair value at the ending 18,545     18,545    
Non-controlled affiliate company investments | Ascent Midco, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       726    
Purchases (cost)       1,651    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       757    
Fair value at the ending 3,134     3,134    
Non-controlled affiliate company investments | Baystate Sewage Disposal, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   13,441   13,441 0  
Transfers in (out)       0 0  
Purchases (cost)       860 13,154  
Sales and paydowns (cost)       (22) 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       9 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (183) 0  
Fair value at the ending 14,105   13,154 14,105 13,154  
Non-controlled affiliate company investments | Born To Run, LLC.            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   1,873   1,873 2,308  
Transfers in (out)       0 0  
Purchases (cost)       927 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (64) 261  
Fair value at the ending 2,736   2,569 2,736 2,569  
Non-controlled affiliate company investments | ClearlyRated Capital (Class A Units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   9,053   9,053 5,500  
Transfers in (out)       0 0  
Purchases (cost)       287 3,000  
Sales and paydowns (cost)       (8) 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       4 1  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (414) 27  
Fair value at the ending 8,922   8,528 8,922 8,528  
Non-controlled affiliate company investments | Engineered Metal Solutions, Inc.            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   14,483   14,483    
Transfers in (out)       0    
Purchases (cost)       9,917    
Sales and paydowns (cost)       (158)    
PIK interest capitalized (cost)       0    
Discount accretion       18    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       2,512    
Fair value at the ending 26,772     26,772    
Non-controlled affiliate company investments | Familia Dental Group Holdings, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       2,623    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (266)    
Fair value at the ending 2,357     2,357    
Non-controlled affiliate company investments | FLEET Response, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       12,900    
Purchases (cost)       1,770    
Sales and paydowns (cost)       (126)    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       723    
Fair value at the ending 15,267     15,267    
Non-controlled affiliate company investments | HFZ Capital Group LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       18,371    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       52    
Fair value at the ending 18,423     18,423    
Non-controlled affiliate company investments | Jumpstart Holdco, Inc.            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   5,179   5,179    
Transfers in (out)       0    
Purchases (cost)       1,998    
Sales and paydowns (cost)       (32)    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (492)    
Fair value at the ending 6,653     6,653    
Non-controlled affiliate company investments | MC Assets Management LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       19,017    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       (30)    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (107)    
Fair value at the ending 18,880     18,880    
Non-controlled affiliate company investments | MC Aviation Limited            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   23,603   23,603    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       2,209    
Fair value at the ending 25,812     25,812    
Non-controlled affiliate company investments | MC Voyager SPV II LLC (Equity Commitment)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   20,522   20,522 0  
Transfers in (out)       0 0  
Purchases (cost)       5,918 13,306  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending 26,440   13,306 26,440 13,306  
Non-controlled affiliate company investments | Nastel Technologies, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   9,000   9,000 8,089  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       8 7  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       1,012 619  
Fair value at the ending 10,020   8,715 10,020 8,715  
Non-controlled affiliate company investments | NFS Intermediate Holdco, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   60,650   60,650 0  
Transfers in (out)       0 0  
Purchases (cost)       0 53,255  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       3,157 0  
Fair value at the ending 63,807   53,255 63,807 53,255  
Non-controlled affiliate company investments | Residential Homes for Rent LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       3,183    
Purchases (cost)       2,546    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       1,239    
Fair value at the ending 6,968     6,968    
Non-controlled affiliate company investments | S F R Holdco, L L C            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   19,383   19,383 18,618  
Transfers in (out)       (17,062) 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (2,321) 264  
Fair value at the ending 0   18,882 0 18,882  
Non-controlled affiliate company investments | S F R Holdco 2, L L C            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   8,401   8,401 3,777  
Transfers in (out)       (8,531) 0  
Purchases (cost)       0 2,375  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       130 96  
Fair value at the ending 0   6,248 0 6,248  
Non-controlled affiliate company investments | SheerTrans Solutions, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   20,141   20,141 19,751  
Transfers in (out)       0 0  
Purchases (cost)       439 1,879  
Sales and paydowns (cost)       (1,238) (1,050)  
PIK interest capitalized (cost)       449 190  
Discount accretion       16 14  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       680 (1,280)  
Fair value at the ending 20,487   19,504 20,487 19,504  
Non-controlled affiliate company investments | Summit Professional Education, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   32,092   32,092 28,065  
Transfers in (out)       0 0  
Purchases (cost)       1,227 2,595  
Sales and paydowns (cost)       (70) (1,196)  
PIK interest capitalized (cost)       0 0  
Discount accretion       32 20  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       2,059 4  
Fair value at the ending 35,340   29,488 35,340 29,488  
Non-controlled affiliate company investments | TJ Management HoldCo LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       2,940    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (337)    
Fair value at the ending 2,603     2,603    
Non-controlled affiliate company investments | Triad Financial Services, Inc.            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   6,902   6,902 4,803  
Transfers in (out)       0 0  
Purchases (cost)       0 1,521  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 16  
Fair value at the ending 6,902   6,340 6,902 6,340  
Non-controlled affiliate company investments | Whistler Parent Holdings III, Inc.            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   22,256   22,256 26,291  
Transfers in (out)       0 0  
Purchases (cost)       5,460 1,286  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       2,132 889  
Discount accretion       31 46  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (4,524) (6,518)  
Fair value at the ending 25,355   21,994 25,355 21,994  
Non-controlled affiliate company investments | YBR OZ ECE, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   9,770   9,770 0  
Transfers in (out)       0 0  
Purchases (cost)       0 8,836  
Sales and paydowns (cost)       (15) 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       4 3  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (5) 38  
Fair value at the ending 9,754   8,877 9,754 8,877  
Non-controlled affiliate company investments | Zodega Landscaping, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   31,421   31,421 28,553  
Transfers in (out)       0 0  
Purchases (cost)       496 0  
Sales and paydowns (cost)       (656) (60)  
PIK interest capitalized (cost)       0 0  
Discount accretion       57 51  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       1,324 2,207  
Fair value at the ending 32,642   30,751 32,642 30,751  
Controlled affiliate company investments            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       25,593    
Purchases (cost)       15,872    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       (123)    
Net realized gain (loss)       0    
Net change in unrealized gain (loss) 1,540   0 1,540 0  
Fair value at the ending [3],[4],[6],[7] 42,882     42,882    
Controlled affiliate company investments | S F R Holdco, L L C            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       17,062    
Purchases (cost)       10,902    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       (119)    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       1,975    
Fair value at the ending 29,820     29,820    
Controlled affiliate company investments | S F R Holdco 2, L L C            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       8,531    
Purchases (cost)       4,970    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       (4)    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (435)    
Fair value at the ending 13,062     13,062    
Investment, Identifier [Axis]: 3C Buyer LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,653   2,653    
Investment, Identifier [Axis]: 3C Buyer LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   1,596   1,596    
Investment, Identifier [Axis]: 3C Buyer LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   812   812    
Investment, Identifier [Axis]: 3C Buyer LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   2,922   2,922    
Investment, Identifier [Axis]: 3C Buyer LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10]   1,618   1,618    
Investment, Identifier [Axis]: 601 Lafayette Mezz LLC (Delayed Draw) | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13]   2,571   2,571    
Fair value at the ending [4],[14],[15],[16] 9,228     9,228    
Investment, Identifier [Axis]: 601 Lafayette Mezz LLC | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   20,813   20,813    
Fair value at the ending [4],[16] 20,695     20,695    
Investment, Identifier [Axis]: 95 Percent Buyer, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   806   806    
Fair value at the ending [4],[18] $ 1,147     $ 1,147    
Number of shares held 385,027 [18]     385,027 [18]   385,027 [17]
Investment, Identifier [Axis]: 95 Percent Buyer, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Investment, Identifier [Axis]: 95 Percent Buyer, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[10],[19]   15,581   15,581    
Investment, Identifier [Axis]: A360, Inc. (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   900   900    
Fair value at the ending [4] $ 1,045     $ 1,045    
Number of shares held 838     838   838
Investment, Identifier [Axis]: A360, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   444   $ 444    
Fair value at the ending [4],[14],[15] $ 430     430    
Investment, Identifier [Axis]: A360, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   103   103    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: A360, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   10,421   10,421    
Fair value at the ending [4],[21] 10,075     10,075    
Investment, Identifier [Axis]: AMS Parent, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[22]   14,682   14,682    
Fair value at the ending [4],[23],[24] 14,081     14,081    
Investment, Identifier [Axis]: APCO Worldwide, Inc. (Class A voting common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 837     $ 837    
Number of shares held 100     100    
Investment, Identifier [Axis]: API Holdings III Corp. | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,723   $ 1,723    
Investment, Identifier [Axis]: API Holdings III Corp. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   170   170    
Investment, Identifier [Axis]: ASG II, LLC 1 | Unitranche Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   14,981   14,981    
Fair value at the ending [4],[26] $ 16,837     16,837    
Investment, Identifier [Axis]: ASG II, LLC 2 | Unitranche Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,247   2,247    
Fair value at the ending [4],[26] 2,525     2,525    
Investment, Identifier [Axis]: ASG III, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   6,134   6,134    
Fair value at the ending [4],[14],[15] 12,607     12,607    
Investment, Identifier [Axis]: ASG III, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: ASG III, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[27]   7,484   7,484    
Fair value at the ending [4],[28],[29] 7,484     7,484    
Investment, Identifier [Axis]: ASG III, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22],[27]   3,151   3,151    
Fair value at the ending [4],[24],[29] 3,151     3,151    
Investment, Identifier [Axis]: Accelevation LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   3,371   3,371    
Fair value at the ending [4],[14],[15] 3,336     3,336    
Investment, Identifier [Axis]: Accelevation LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   666   666    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Accelevation LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   13,965   13,965    
Fair value at the ending [4],[23] 5,681     5,681    
Investment, Identifier [Axis]: Accelevation LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   984   984    
Fair value at the ending [4],[21],[23] 13,784     13,784    
Investment, Identifier [Axis]: Accelevation LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 974     974    
Investment, Identifier [Axis]: Accelya US Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[30]   8,374   8,374    
Fair value at the ending [4],[16],[31] 7,480     7,480    
Investment, Identifier [Axis]: Acquia Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   588   588    
Fair value at the ending [4] 540     540    
Investment, Identifier [Axis]: Acquia Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   15,430   15,430    
Fair value at the ending [4],[32],[33] 14,178     14,178    
Investment, Identifier [Axis]: Acquia Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9]   3,092   3,092    
Fair value at the ending [4],[32] 2,840     2,840    
Investment, Identifier [Axis]: Adept AG Holdings, LLC (Class A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   0    
Fair value at the ending [4],[18] $ 0     $ 0    
Number of shares held 314,584 [18]     314,584 [18]   314,584 [17]
Investment, Identifier [Axis]: Adept AG Holdings, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15],[34] $ 500     $ 500    
Investment, Identifier [Axis]: Adept AG Holdings, LLC (Series B units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   0    
Fair value at the ending [4],[18] $ 0     $ 0    
Number of shares held 45,874 [18]     45,874 [18]   45,874 [17]
Investment, Identifier [Axis]: Adept AG Holdings, LLC (Series C preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   $ 0    
Fair value at the ending [4],[18] $ 0     $ 0    
Number of shares held 67,283 [18]     67,283 [18]   67,283 [17]
Investment, Identifier [Axis]: Adept AG Holdings, LLC (Series L units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   $ 0    
Fair value at the ending [4],[18] $ 0     $ 0    
Number of shares held 325 [18]     325 [18]   325 [17]
Investment, Identifier [Axis]: Adept AG Holdings, LLC 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[35],[36]   1,644   $ 1,644    
Fair value at the ending [4],[16],[34],[37] $ 855     855    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[35],[36]   5,644   5,644    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[35],[36]   0   0    
Fair value at the ending [4],[16],[34],[37] 0     0    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   4,533   4,533    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 3 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[35],[36]   0   0    
Fair value at the ending [4],[16],[34],[37] 0     0    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 4 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   1,317   1,317    
Fair value at the ending [4],[16],[34],[37] 5,529     5,529    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 5 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   0   0    
Fair value at the ending [4],[34] 708     708    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 6 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   0   0    
Fair value at the ending [4],[34] 0     0    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 7 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[34] 0     0    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 8 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[34] 4,596     4,596    
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   727   727    
Fair value at the ending [4] $ 956     $ 956    
Number of shares held 820,817     820,817   608,696
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   1,400   $ 1,400    
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 6,965     6,965    
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 5,596     5,596    
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 4,375     4,375    
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   7,000   7,000    
Investment, Identifier [Axis]: Aligned Exteriors Group Holdco, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: Aligned Exteriors Group Holdco, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Aligned Exteriors Group Holdco, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   13,721   13,721    
Fair value at the ending [4],[21] 13,693     13,693    
Investment, Identifier [Axis]: Alpine Pet OpCo, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Alpine Pet OpCo, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Alpine Pet OpCo, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   21,725   21,725    
Fair value at the ending [4],[23] 21,967     21,967    
Investment, Identifier [Axis]: Alta Pest Control, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   238   238    
Fair value at the ending [4],[14],[15] 1,397     1,397    
Investment, Identifier [Axis]: Alta Pest Control, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Alta Pest Control, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   3,940   3,940    
Fair value at the ending [4],[24] 3,986     3,986    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   819   819    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 2,075     2,075    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   5,770   5,770    
Fair value at the ending [4],[23],[24],[29] 20,500     20,500    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   4,093   4,093    
Fair value at the ending [4],[23],[24] 5,698     5,698    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   2,547   2,547    
Fair value at the ending [4],[24] 4,042     4,042    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   2,612   2,612    
Fair value at the ending [4],[23] 2,510     2,510    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 2,574     2,574    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 6 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 4,295     4,295    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22],[27]   20,757   20,757    
Investment, Identifier [Axis]: American Auto Auction Group, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   9,824   9,824    
Fair value at the ending [4] 4,954     4,954    
Investment, Identifier [Axis]: American Broadband and Telecommunications Company LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[38]   265   265    
Fair value at the ending [4],[14],[34],[39] 138     138    
Investment, Identifier [Axis]: American Broadband and Telecommunications Company LLC (Warrant to purchase the equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] 0     0    
Investment, Identifier [Axis]: American Broadband and Telecommunications Company LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25],[38]   2,779   2,779    
Fair value at the ending [4],[26],[34],[39] 1,447     1,447    
Investment, Identifier [Axis]: American Community Homes, Inc. (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending 0     0    
Investment, Identifier [Axis]: American Community Homes, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[14] 0     0    
Investment, Identifier [Axis]: American Community Homes, Inc. (Shares of common stock)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending $ 0     $ 0    
Number of units held 4,940     4,940    
Investment, Identifier [Axis]: American Community Homes, Inc. (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] $ 0     $ 0    
Number of shares held 4,940     4,940    
Investment, Identifier [Axis]: American Community Homes, Inc. 1            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0    
Transfers in (out)       0    
Purchases (cost)       8,458    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       136    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (163)    
Fair value at the ending $ 8,431     8,431    
Investment, Identifier [Axis]: American Community Homes, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 8,431     8,431    
Investment, Identifier [Axis]: American Community Homes, Inc. 2            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       4,162    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       67    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (81)    
Fair value at the ending 4,148     4,148    
Investment, Identifier [Axis]: American Community Homes, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 4,148     4,148    
Investment, Identifier [Axis]: American Community Homes, Inc. 3            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       513    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       8    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (10)    
Fair value at the ending 511     511    
Investment, Identifier [Axis]: American Community Homes, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 511     511    
Investment, Identifier [Axis]: American Community Homes, Inc. 4            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       1,885    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       31    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (37)    
Fair value at the ending 1,879     1,879    
Investment, Identifier [Axis]: American Community Homes, Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 1,879     1,879    
Investment, Identifier [Axis]: American Community Homes, Inc. 5            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       3,490    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       56    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (67)    
Fair value at the ending 3,479     3,479    
Investment, Identifier [Axis]: American Community Homes, Inc. 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 3,479     3,479    
Investment, Identifier [Axis]: American Community Homes, Inc. 6            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       16    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       1    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending 17     17    
Investment, Identifier [Axis]: American Community Homes, Inc. 6 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 17     17    
Investment, Identifier [Axis]: American Community Homes, Inc. 7            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       80    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       1    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (1)    
Fair value at the ending 80     80    
Investment, Identifier [Axis]: American Community Homes, Inc. 7 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 80     80    
Investment, Identifier [Axis]: Angel Lux Bidco S.A.R.L. (Delayed Draw) | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15],[16],[40] 0     0    
Investment, Identifier [Axis]: Angel Lux Bidco S.A.R.L. | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[26],[28],[29],[40] 25,000     25,000    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   16,362   16,362    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[25]   9,784   9,784    
Fair value at the ending [4],[26],[28] 9,719     9,719    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   3,685   3,685    
Fair value at the ending [4],[23] 2,889     2,889    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   8,703   8,703    
Fair value at the ending [4],[23] 6,827     6,827    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   5,760   5,760    
Fair value at the ending [4],[23] 4,519     4,519    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   19,243   19,243    
Fair value at the ending [4],[32] 15,116     15,116    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 6 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21],[24] 6,140     6,140    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 7 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 15,098     15,098    
Investment, Identifier [Axis]: AppLogic Networks OpCo I LLC (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] $ 97     $ 97    
Number of shares held [26] 28,198     28,198    
Investment, Identifier [Axis]: AppLogic Networks OpCo I LLC (fka Sandvine Corporation) (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   0   $ 0    
Number of shares held [25]           23,212
Investment, Identifier [Axis]: AppLogic Networks OpCo I LLC (fka Sandvine Corporation) (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   88   88    
Number of shares held [25]           28,198
Investment, Identifier [Axis]: AppLogic Networks OpCo I LLC (fka Sandvine Corporation) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   350   350    
Investment, Identifier [Axis]: AppLogic Networks OpCo I LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 620     620    
Investment, Identifier [Axis]: Appriss Health, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Appriss Health, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   3,169   3,169    
Fair value at the ending [4],[33] 3,168     3,168    
Investment, Identifier [Axis]: Aras Corporation (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   254   254    
Fair value at the ending [4],[14] 318     318    
Investment, Identifier [Axis]: Aras Corporation | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[25]   5,299   5,299    
Fair value at the ending [4],[23],[26],[28] 7,628     7,628    
Investment, Identifier [Axis]: Arax Midco, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13]   167   167    
Investment, Identifier [Axis]: Arax Midco, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13]   181   181    
Investment, Identifier [Axis]: Arax Midco, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10],[13]   13,400   13,400    
Investment, Identifier [Axis]: Arax Midco, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[13]   4,455   4,455    
Investment, Identifier [Axis]: Archtop Fiber Intermediate LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   5,865   5,865    
Fair value at the ending [4],[14],[15] 14,662     14,662    
Investment, Identifier [Axis]: Archtop Fiber Intermediate LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   21,992   21,992    
Fair value at the ending [4] 21,992     21,992    
Investment, Identifier [Axis]: Arcserve Cayman GP LLC (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 217,105     217,105   157,895
Investment, Identifier [Axis]: Arcserve Cayman GP LLC (Class B common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   $ 0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 404,412     404,412   294,118
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,960   $ 1,960    
Fair value at the ending [4] $ 2,837     $ 2,837    
Number of shares held 217,105     217,105   157,895
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (Class B common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   3,651   $ 3,651    
Fair value at the ending [4] $ 5,285     $ 5,285    
Number of shares held 404,412     404,412   294,118
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[36]   882   $ 882    
Fair value at the ending [4],[14],[15],[34] $ 1,213     1,213    
Investment, Identifier [Axis]: Arcserve Cayman Opco LP 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   0   0    
Fair value at the ending [4],[34] 0     0    
Investment, Identifier [Axis]: Arcserve Cayman Opco LP 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   512   512    
Fair value at the ending [4],[34] 737     737    
Investment, Identifier [Axis]: Arcserve Cayman Opco LP 3 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   524   524    
Fair value at the ending [4],[34] 753     753    
Investment, Identifier [Axis]: Ascent Midco, LLC (Class A units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       726    
Purchases (cost)       1,651    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       757    
Fair value at the ending $ 3,134     $ 3,134    
Number of units held 2,758,065     2,758,065    
Investment, Identifier [Axis]: Ascent Midco, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   608   $ 608    
Fair value at the ending [4],[6],[18] $ 3,134     $ 3,134    
Number of shares held 2,758,065 [18]     2,758,065 [18]   725,806 [17]
Investment, Identifier [Axis]: Assembly Buyer, LLC (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: Assembly Buyer, LLC (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Assembly Buyer, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Assembly Buyer, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[27]   16,000   16,000    
Fair value at the ending [4],[23],[29] 15,840     15,840    
Investment, Identifier [Axis]: Asset Reliability Bidco, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Asset Reliability Bidco, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Asset Reliability Bidco, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[35]   11,388   11,388    
Fair value at the ending [4],[16],[37] 11,008     11,008    
Investment, Identifier [Axis]: Asset Reliability Bidco, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   20,147   20,147    
Fair value at the ending [4],[32] 20,349     20,349    
Investment, Identifier [Axis]: Attom Intermediate Holdco, LLC (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[18] $ 325     $ 325    
Number of shares held [18] 304,538     304,538    
Investment, Identifier [Axis]: Attom Intermediate Holdco, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   181   $ 181    
Fair value at the ending [4],[14],[15] $ 181     181    
Investment, Identifier [Axis]: Attom Intermediate Holdco, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Attom Intermediate Holdco, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10]   32,474   32,474    
Fair value at the ending [4],[23],[28],[32] 32,359     32,359    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   3,982   3,982    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[41]   2,935   2,935    
Fair value at the ending [4],[16],[42] 6,593     6,593    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[43]   5,876   5,876    
Fair value at the ending [4],[16],[44] 5,827     5,827    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   5,792   5,792    
Fair value at the ending [4],[23] 6,060     6,060    
Investment, Identifier [Axis]: Avison Young (USA) Inc. (Class A preferred shares) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[36],[45]   0   0    
Fair value at the ending [4],[16],[34],[46] $ 0     $ 0    
Number of shares held 2,036,442 [16],[34],[46]     2,036,442 [16],[34],[46]   2,036,442 [13],[36],[45]
Investment, Identifier [Axis]: Avison Young (USA) Inc. (Class F common shares) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[45]   0   $ 0    
Fair value at the ending [4],[16],[46] $ 0     $ 0    
Number of shares held 1,521 [16],[46]     1,521 [16],[46]   1,521 [13],[45]
Investment, Identifier [Axis]: Avison Young (USA) Inc. 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[36],[45]   961   $ 961    
Fair value at the ending [4],[16],[34],[46] $ 808     808    
Investment, Identifier [Axis]: Avison Young (USA) Inc. 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[36],[45]   155   155    
Fair value at the ending [4],[16],[34],[46] 140     140    
Investment, Identifier [Axis]: Avison Young (USA) Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[36],[45]   704   704    
Fair value at the ending [4],[16],[34],[46] 680     680    
Investment, Identifier [Axis]: B2B Industrial Products LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   9,356   9,356    
Fair value at the ending [4],[26] 9,288     9,288    
Investment, Identifier [Axis]: B2B Industrial Products LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   2,166   2,166    
Fair value at the ending [4],[26] 2,150     2,150    
Investment, Identifier [Axis]: BCTO Bobsled Purchaser, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: BCTO Bobsled Purchaser, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: BCTO Bobsled Purchaser, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[29] 19,552     19,552    
Investment, Identifier [Axis]: BLP Buyer, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   5,225   5,225    
Fair value at the ending [4],[14] 6,138     6,138    
Investment, Identifier [Axis]: BLP Buyer, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10],[20],[25]   49,250   49,250    
Fair value at the ending [4],[21],[23],[26],[28],[32] 49,000     49,000    
Investment, Identifier [Axis]: BLP Buyer, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   1,876   1,876    
Fair value at the ending [4],[26] 1,867     1,867    
Investment, Identifier [Axis]: BLP Buyer, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   5,925   5,925    
Fair value at the ending [4],[24] 5,895     5,895    
Investment, Identifier [Axis]: BLP Buyer, Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   1,083   1,083    
Fair value at the ending [4],[23] 1,075     1,075    
Investment, Identifier [Axis]: BLP Buyer, Inc. 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   1,505   1,505    
Fair value at the ending [4],[23] 1,492     1,492    
Investment, Identifier [Axis]: BTR Opco LLC (Class A common units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending 0     0    
Investment, Identifier [Axis]: BTR Opco LLC (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   0   0    
Fair value at the ending [4],[6] $ 0     $ 0    
Number of shares held 863     863   622 [5]
Investment, Identifier [Axis]: BTR Opco LLC (Delayed Draw)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   1,478   $ 1,478 1,131  
Transfers in (out)       0 0  
Purchases (cost)       861 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       117 76  
Fair value at the ending $ 2,456   1,207 2,456 1,207  
Investment, Identifier [Axis]: BTR Opco LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11],[12],[36]   1,478   1,478    
Fair value at the ending [4],[6],[14],[15],[34] $ 2,456     $ 2,456    
Investment, Identifier [Axis]: BTR Opco LLC (fka Born To Run, LLC) (Class A common units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning         0  
Transfers in (out)         0  
Purchases (cost)         0  
Sales and paydowns (cost)         0  
PIK interest capitalized (cost)         0  
Discount accretion         0  
Net realized gain (loss)         0  
Net change in unrealized gain (loss)         0  
Fair value at the ending     $ 0   $ 0  
Number of units held 863   659 863 659  
Investment, Identifier [Axis]: BTR Opco LLC 1            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   395   $ 395 $ 1,177  
Transfers in (out)       0 0  
Purchases (cost)       66 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (181) 185  
Fair value at the ending $ 280   $ 1,362 280 1,362  
Investment, Identifier [Axis]: BTR Opco LLC 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[36]   395   395    
Fair value at the ending [4],[6],[34] 280     280    
Investment, Identifier [Axis]: BTR Opco LLC 2            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0 0  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending 0   0 0 0  
Investment, Identifier [Axis]: BTR Opco LLC 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[36]   0   0    
Fair value at the ending [4],[6],[34] 0     0    
Investment, Identifier [Axis]: BTRS Holdings Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   2,577   2,577    
Fair value at the ending [4],[14] 3,544     3,544    
Investment, Identifier [Axis]: BTRS Holdings Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[27]   26,398   26,398    
Fair value at the ending [4],[28],[29] 26,398     26,398    
Investment, Identifier [Axis]: BW 51f, L.P. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   9,000   9,000    
Fair value at the ending [4],[16] 9,000     9,000    
Investment, Identifier [Axis]: Band Finance LLC and Anderson Global Luxembourg SCSp (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13],[47]   4,863   4,863    
Fair value at the ending [4],[14],[15],[16],[26],[40] 9,001     9,001    
Investment, Identifier [Axis]: Band Finance LLC and Anderson Global Luxembourg SCSp (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13],[47]   521   521    
Fair value at the ending [4],[14],[16],[40] 2,607     2,607    
Investment, Identifier [Axis]: Band Finance LLC and Anderson Global Luxembourg SCSp 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[10],[25]   36,507   36,507    
Fair value at the ending [4],[23],[26],[28] 36,585     36,585    
Investment, Identifier [Axis]: Band Finance LLC and Anderson Global Luxembourg SCSp 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[47]   13,908   13,908    
Fair value at the ending [4],[16],[23],[40] 13,937     13,937    
Investment, Identifier [Axis]: Bandas Law Firm, P.C. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 4,689     4,689    
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   4,389   4,389 0  
Transfers in (out)       0 0  
Purchases (cost)       0 4,312  
Sales and paydowns (cost)       (22) 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       9 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (9) 0  
Fair value at the ending 4,367   4,312 4,367 4,312  
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Class A-1 preferred units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   8,926   8,926 0  
Transfers in (out)       0 0  
Purchases (cost)       0 8,842  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (174) 0  
Fair value at the ending $ 8,752   $ 8,842 $ 8,752 $ 8,842  
Number of units held 8,841,724   8,841,724 8,841,724 8,841,724  
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Class A-1 preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   8,926   $ 8,926    
Fair value at the ending [4],[6] $ 8,752     $ 8,752    
Number of shares held 8,841,724     8,841,724   8,841,724 [5]
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Delayed Draw)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   126   $ 126 $ 0  
Transfers in (out)       0 0  
Purchases (cost)       860 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending $ 986   $ 0 986 0  
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11],[12]   126   126    
Fair value at the ending [4],[6],[14],[15] 986     986    
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0 0  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending 0   0 0 0  
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11]   0   0    
Fair value at the ending [4],[6],[14] 0     0    
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[8]   4,389   4,389    
Fair value at the ending [4],[6],[23] 4,367     4,367    
Investment, Identifier [Axis]: Beckway Acquisition, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Beckway Acquisition, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Beckway Acquisition, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   8,000   8,000    
Fair value at the ending [4],[23] 7,960     7,960    
Investment, Identifier [Axis]: Bench Walk Lead, LLC (Commitment to purchase the equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[17]   1,513   1,513    
Fair value at the ending [4],[16],[18] 1,543     1,543    
Investment, Identifier [Axis]: Bench Walk Lead, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13]   4,181   4,181    
Fair value at the ending [4],[14],[15],[16] 4,594     4,594    
Investment, Identifier [Axis]: Bench Walk Lead, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   27,114   27,114    
Investment, Identifier [Axis]: Bench Walk Lead, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   1,603   1,603    
Investment, Identifier [Axis]: Bench Walk Lead, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16] 22,851     22,851    
Investment, Identifier [Axis]: Bloomerang, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   1,614   1,614    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Bloomerang, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,600   1,600    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Bloomerang, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21],[26],[28],[29] 18,114     18,114    
Investment, Identifier [Axis]: Bloomerang, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 6,042     6,042    
Investment, Identifier [Axis]: Bloomerang, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[20],[25],[27]   16,141   16,141    
Investment, Identifier [Axis]: Bluesight, Inc. (Class A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   528   528    
Fair value at the ending [4] $ 563     $ 563    
Number of shares held 563     563   528
Investment, Identifier [Axis]: Bluesight, Inc. (Class B common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   227   $ 227    
Fair value at the ending [4] $ 436     $ 436    
Number of shares held 301,475     301,475   282,635
Investment, Identifier [Axis]: Bluesight, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: Bluesight, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   3,936   3,936    
Fair value at the ending [4],[21],[28],[33] 32,077     32,077    
Investment, Identifier [Axis]: Bluesight, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[27]   26,243   26,243    
Fair value at the ending [4],[21],[24] 4,184     4,184    
Investment, Identifier [Axis]: Bluesight, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21],[29] 27,894     27,894    
Investment, Identifier [Axis]: Bluesight, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19],[20]   30,179   30,179    
Investment, Identifier [Axis]: Buck Design LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   3,512   3,512    
Investment, Identifier [Axis]: Buck Design LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   798   798    
Fair value at the ending [4],[14] 2,749     2,749    
Investment, Identifier [Axis]: Buck Design LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[32] 9,900     9,900    
Investment, Identifier [Axis]: Buck Design LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 7,804     7,804    
Investment, Identifier [Axis]: Buck Design LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9]   9,950   9,950    
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   4,143   4,143    
Investment, Identifier [Axis]: CE Intermediate, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[10],[19],[25]   35,013   35,013    
Investment, Identifier [Axis]: CGI Automated Manufacturing, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   8,710   8,710    
Fair value at the ending [4] 12,800     12,800    
Investment, Identifier [Axis]: CGI Automated Manufacturing, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   5,542   5,542    
Fair value at the ending [4] 6,769     6,769    
Investment, Identifier [Axis]: CGI Automated Manufacturing, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   10,605   10,605    
Fair value at the ending [4] 10,789     10,789    
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   568   568    
Fair value at the ending [4],[18] $ 420     $ 420    
Number of shares held 568,181 [18]     568,181 [18]   568,181 [17]
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   4,863   4,863    
Fair value at the ending [4],[23] 4,837     4,837    
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   16,986   16,986    
Fair value at the ending [4],[21],[24] 16,900     16,900    
Investment, Identifier [Axis]: Caputo Cheese Interco Corp. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,691   2,691    
Fair value at the ending [4] $ 2,803     $ 2,803    
Number of shares held 2,777,778     2,777,778   2,777,778
Investment, Identifier [Axis]: Caputo Cheese Interco Corp. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   750   $ 750    
Fair value at the ending [4],[14] $ 1,000     1,000    
Investment, Identifier [Axis]: Caputo Cheese Interco Corp. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   15,000   15,000    
Fair value at the ending [4],[23] 14,887     14,887    
Investment, Identifier [Axis]: Caravel Autism Health, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   3,213   3,213    
Fair value at the ending [4],[18] $ 2,695     $ 2,695    
Number of shares held 3,781 [18]     3,781 [18]   3,781 [17]
Investment, Identifier [Axis]: Caravel Autism Health, LLC (Class B units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   $ 0    
Fair value at the ending [4],[18] $ 0     $ 0    
Number of shares held 4,011 [18]     4,011 [18]   4,011 [17]
Investment, Identifier [Axis]: Caravel Autism Health, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   3,609   $ 3,609    
Fair value at the ending [4],[14],[15] $ 3,535     3,535    
Investment, Identifier [Axis]: Caravel Autism Health, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 2,115     2,115    
Investment, Identifier [Axis]: Caravel Autism Health, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[25],[27]   17,682   17,682    
Fair value at the ending [4],[21],[26],[29] 17,320     17,320    
Investment, Identifier [Axis]: Caravel Autism Health, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   7,635   7,635    
Fair value at the ending [4],[23] 7,479     7,479    
Investment, Identifier [Axis]: Cardinal Parent, Inc | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   9,622   9,622    
Fair value at the ending [4] 6,640     6,640    
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[48]   4,453   4,453    
Fair value at the ending [4],[49] $ 4,257     $ 4,257    
Number of shares held 4,177 [49]     4,177 [49]   4,177 [48]
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   232   $ 232    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 7,453     7,453    
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Delayed Draw) 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   358   358    
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 1,692     1,692    
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[29],[32] 16,273     16,273    
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 616     616    
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[27]   16,500   16,500    
Investment, Identifier [Axis]: Cdata Software, Inc. (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 2,405     2,405    
Investment, Identifier [Axis]: Cdata Software, Inc. (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   2,343   2,343    
Fair value at the ending [4],[14],[15] 4,005     4,005    
Investment, Identifier [Axis]: Cdata Software, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Cdata Software, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19],[20],[27]   46,007   46,007    
Fair value at the ending [4],[21],[28],[29],[33] 51,950     51,950    
Investment, Identifier [Axis]: Central Moloney, LLC (Class A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   3,507   3,507    
Fair value at the ending [4] $ 3,508     $ 3,508    
Number of shares held 6,029     6,029   6,029
Investment, Identifier [Axis]: Central Moloney, LLC (Class B common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   32,227   $ 32,227    
Fair value at the ending [4] $ 33,460     $ 33,460    
Number of shares held 6,029     6,029   6,029
Investment, Identifier [Axis]: Central Moloney, LLC (Class G units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   296   $ 296    
Fair value at the ending [4] $ 309     $ 309    
Number of shares held 63     63   63
Investment, Identifier [Axis]: Chess.com, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   154   $ 154    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 7     7   5 [17]
Investment, Identifier [Axis]: Chess.com, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: Chess.com, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   11,711   11,711    
Fair value at the ending [4],[23],[33] 14,582     14,582    
Investment, Identifier [Axis]: Cleanova US Holdings LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[50]   14,321   14,321    
Investment, Identifier [Axis]: ClearCapital Holdings, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: ClearCapital Holdings, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: ClearCapital Holdings, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[25]   7,231   7,231    
Fair value at the ending [4],[23],[26] 9,954     9,954    
Investment, Identifier [Axis]: ClearlyRated Capital, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   1,427   1,427 0  
Transfers in (out)       0 0  
Purchases (cost)       0 1,407  
Sales and paydowns (cost)       (8) 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       4 1  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (1) 27  
Fair value at the ending 1,422   1,435 1,422 1,435  
Investment, Identifier [Axis]: ClearlyRated Capital, LLC (Class A units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   7,626   7,626 5,500  
Transfers in (out)       0 0  
Purchases (cost)       0 1,593  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (413) 0  
Fair value at the ending $ 7,213   $ 7,093 $ 7,213 $ 7,093  
Number of units held 7,093,224   7,093,224 7,093,224 7,093,224  
Investment, Identifier [Axis]: ClearlyRated Capital, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[17]   7,626   $ 7,626    
Fair value at the ending [4],[6],[18] $ 7,213     $ 7,213    
Number of shares held 7,093,224 [18]     7,093,224 [18]   7,093,224 [5],[17]
Investment, Identifier [Axis]: ClearlyRated Capital, LLC (Delayed Draw)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0 $ 0  
Transfers in (out)       0 0  
Purchases (cost)       287 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending $ 287   $ 0 287 0  
Investment, Identifier [Axis]: ClearlyRated Capital, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11],[12]   0   0    
Fair value at the ending [4],[6],[14],[15] 287     287    
Investment, Identifier [Axis]: ClearlyRated Capital, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   1,427   1,427    
Fair value at the ending [4],[6] 1,422     1,422    
Investment, Identifier [Axis]: Cloud for Good, LLC (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   5,100   5,100    
Fair value at the ending [4] $ 4,400     $ 4,400    
Number of shares held 5,000,000     5,000,000   5,000,000
Investment, Identifier [Axis]: Cloud for Good, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: Cloud for Good, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Cloud for Good, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9]   17,369   17,369    
Fair value at the ending [4],[23],[32] 17,238     17,238    
Investment, Identifier [Axis]: Clydesdale Holdings, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   4,900   4,900    
Fair value at the ending [4],[26] 4,875     4,875    
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19],[25]   4,900   4,900    
Fair value at the ending [4],[26],[33] 4,875     4,875    
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[25]   14,396   14,396    
Fair value at the ending [4],[23],[26],[32] 14,351     14,351    
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[20]   20,479   20,479    
Fair value at the ending [4],[21],[23] 20,416     20,416    
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   8,199   8,199    
Fair value at the ending [4],[21],[23] 8,174     8,174    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 863     863    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   884   884    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[10]   13,331   13,331    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10]   2,447   2,447    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   6,640   6,640    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   2,868   2,868    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   2,725   2,725    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23],[26],[28] 12,942     12,942    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[28] 2,376     2,376    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 6,447     6,447    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[33] 2,784     2,784    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 2,646     2,646    
Investment, Identifier [Axis]: Cornerstone Caregiving, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Cornerstone Caregiving, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[24],[32] 19,800     19,800    
Investment, Identifier [Axis]: Cosmos Bidco, Inc. (Class A Membership Interest) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,554   2,554    
Fair value at the ending [4] $ 2,424     $ 2,424    
Number of shares held 2,250,000     2,250,000   2,250,000
Investment, Identifier [Axis]: Cosmos Bidco, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: Cosmos Bidco, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 2,475     2,475    
Investment, Identifier [Axis]: Cosmos Bidco, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19],[20]   36,126   36,126    
Fair value at the ending [4],[21],[28],[33] 36,198     36,198    
Investment, Identifier [Axis]: Cosmos Bidco, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22],[27]   6,774   6,774    
Fair value at the ending [4],[24],[29] 6,787     6,787    
Investment, Identifier [Axis]: Cosmos Bidco, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[27]   18,893   18,893    
Fair value at the ending [4],[29] 18,930     18,930    
Investment, Identifier [Axis]: Cosmos Bidco, Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   4,129   4,129    
Fair value at the ending [4],[21] 4,137     4,137    
Investment, Identifier [Axis]: Cpex Purchaser, LLC (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 154     154    
Investment, Identifier [Axis]: Cpex Purchaser, LLC (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 1,494     1,494    
Investment, Identifier [Axis]: Cpex Purchaser, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   2,743   2,743    
Investment, Identifier [Axis]: Cpex Purchaser, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   12,194   12,194    
Fair value at the ending [4] 13,935     13,935    
Investment, Identifier [Axis]: Cpex Purchaser, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19],[27]   35,964   35,964    
Fair value at the ending [4],[28],[29],[33] 35,964     35,964    
Investment, Identifier [Axis]: Cpex Purchaser, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[27]   6,441   6,441    
Fair value at the ending [4],[29] 6,441     6,441    
Investment, Identifier [Axis]: Cpex Purchaser, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[27]   4,057   4,057    
Fair value at the ending [4] 4,316     4,316    
Investment, Identifier [Axis]: Cpex Purchaser, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[29] 4,057     4,057    
Investment, Identifier [Axis]: Crownpeak Technology, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19]   1,711   1,711    
Fair value at the ending [4],[26],[28],[33] 7,955     7,955    
Investment, Identifier [Axis]: Crusoe Energy Systems LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   15,109   15,109    
Fair value at the ending [4] 2,317     2,317    
Investment, Identifier [Axis]: Crusoe Energy Systems LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   12,447   12,447    
Fair value at the ending [4] 1,857     1,857    
Investment, Identifier [Axis]: DS Parent, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   18,119   18,119    
Fair value at the ending [4],[24] 16,170     16,170    
Investment, Identifier [Axis]: DataOnline Corp. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   2,591   2,591    
Investment, Identifier [Axis]: DataOnline Corp. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[22]   8,587   8,587    
Investment, Identifier [Axis]: DataOnline Corp. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10],[19],[20],[27]   34,396   34,396    
Investment, Identifier [Axis]: Demakes Borrower, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   4,780   4,780    
Investment, Identifier [Axis]: Dorado Acquisition, Inc. (Class A-1 units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   586   586    
Fair value at the ending [4] $ 795     $ 795    
Number of shares held 721,705     721,705   531,783
Investment, Identifier [Axis]: Dorado Acquisition, Inc. (Class A-2 units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   133   $ 133    
Fair value at the ending [4] $ 195     $ 195    
Number of shares held 721,705     721,705   531,783
Investment, Identifier [Axis]: Dorado Acquisition, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Investment, Identifier [Axis]: Dorado Acquisition, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19],[25]   13,116   13,116    
Fair value at the ending [4],[23],[26],[33] $ 17,846     17,846    
Investment, Identifier [Axis]: Dorado Acquisition, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19],[25]   10,874   10,874    
Fair value at the ending [4],[23],[26],[33] 14,795     14,795    
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   614   614    
Fair value at the ending [4] $ 606     $ 606    
Number of shares held 631,435     631,435   573,847
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   650   $ 650    
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   2,255   2,255    
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] $ 4,301     4,301    
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Douglas Holdings, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26],[28],[29] 27,412     27,412    
Investment, Identifier [Axis]: Douglas Holdings, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 5,959     5,959    
Investment, Identifier [Axis]: Douglas Holdings, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[27]   24,912   24,912    
Investment, Identifier [Axis]: Drawbridge Partners, LLC (Class A-1 units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   857   857    
Fair value at the ending [4] $ 1,012     $ 1,012    
Number of shares held 782,607     782,607   652,174
Investment, Identifier [Axis]: Drawbridge Partners, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   3,981   $ 3,981    
Fair value at the ending [4],[14],[15] $ 4,767     4,767    
Investment, Identifier [Axis]: Drawbridge Partners, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Drawbridge Partners, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   15,027   15,027    
Fair value at the ending [4],[26],[33] 17,995     17,995    
Investment, Identifier [Axis]: Dusk Acquisition II Corporation 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[25]   7,901   7,901    
Fair value at the ending [4],[23],[32] 7,784     7,784    
Investment, Identifier [Axis]: Dusk Acquisition II Corporation 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[25]   10,624   10,624    
Fair value at the ending [4],[23] 10,466     10,466    
Investment, Identifier [Axis]: E-Discovery Acquireco, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,455   1,455    
Fair value at the ending [4],[14] 1,455     1,455    
Investment, Identifier [Axis]: E-Discovery Acquireco, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[25]   20,200   20,200    
Fair value at the ending [4],[28] 19,900     19,900    
Investment, Identifier [Axis]: E-Discovery Acquireco, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   3,265   3,265    
Fair value at the ending [4] 3,238     3,238    
Investment, Identifier [Axis]: EMCO Holdco LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: EMCO Holdco LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: EMCO Holdco LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   42,719   42,719    
Fair value at the ending [4],[21],[23],[24],[32] 43,085     43,085    
Investment, Identifier [Axis]: EOS Finco S.A.R.L. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[13],[36],[51]   1,929   1,929    
Investment, Identifier [Axis]: Ecotrak, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Ecotrak, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Ecotrak, LLC (Series B Preferred Units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[18] $ 15,622     $ 15,622    
Number of shares held [18] 14,350,614     14,350,614    
Investment, Identifier [Axis]: Ecotrak, LLC (fka Respida Software Equity CI LP) (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Investment, Identifier [Axis]: Ecotrak, LLC (fka Respida Software Equity CI LP) (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Investment, Identifier [Axis]: Ecotrak, LLC (fka Respida Software Equity CI LP) (Series B Preferred Units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   16,171   16,171    
Number of shares held [17]           15,400,820
Investment, Identifier [Axis]: Ecotrak, LLC (fka Respida Software Equity CI LP) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[27]   7,547   7,547    
Investment, Identifier [Axis]: Ecotrak, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[29] $ 7,547     7,547    
Investment, Identifier [Axis]: Edustaff, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Edustaff, LLC (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   1,099   1,099    
Fair value at the ending [4],[18] $ 1,362     $ 1,362    
Number of shares held 591 [18]     591 [18]   591 [17]
Investment, Identifier [Axis]: Edustaff, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26],[28] $ 10,844     $ 10,844    
Investment, Identifier [Axis]: Edustaff, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 1,857     1,857    
Investment, Identifier [Axis]: Edustaff, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[25]   10,844   10,844    
Investment, Identifier [Axis]: Einstein Parent, INC. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Einstein Parent, INC. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[27]   36,314   36,314    
Fair value at the ending [4],[29],[32] 35,139     35,139    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. (Class A units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   7,633   7,633    
Transfers in (out)       0    
Purchases (cost)       1,768    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       2,377    
Fair value at the ending $ 11,778     $ 11,778    
Number of units held 9,181     9,181    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   7,633   $ 7,633    
Fair value at the ending [4],[6] $ 11,778     $ 11,778    
Number of shares held 9,181     9,181   7,413 [5]
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. (Delayed Draw)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0    
Transfers in (out)       0    
Purchases (cost)       857    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       8    
Fair value at the ending $ 865     865    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       190    
Sales and paydowns (cost)       (124)    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending 66     66    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11]   0   0    
Fair value at the ending [4],[6],[14] 66     66    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. 1            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   6,850   6,850    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       (34)    
PIK interest capitalized (cost)       0    
Discount accretion       13    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (13)    
Fair value at the ending 6,816     6,816    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 6,816     6,816    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. 2            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       7,102    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       5    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       140    
Fair value at the ending 7,247     7,247    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 7,247     7,247    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] 865     865    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   6,850   6,850    
Investment, Identifier [Axis]: Engineering Research and Consulting, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   5,811   5,811    
Fair value at the ending [4] 4,184     4,184    
Investment, Identifier [Axis]: Epika Fleet Services, Inc. (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 3,803     $ 3,803    
Number of shares held 2,642,563     2,642,563    
Investment, Identifier [Axis]: Epika Fleet Services, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   11,210   $ 11,210    
Investment, Identifier [Axis]: Epika Fleet Services, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: Epika Fleet Services, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[20],[22]   50,431   50,431    
Fair value at the ending [4],[21],[23],[24] 49,932     49,932    
Investment, Identifier [Axis]: Epika Fleet Services, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9]   13,349   13,349    
Fair value at the ending [4],[32] 13,217     13,217    
Investment, Identifier [Axis]: Epika Fleet Services, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21],[24] 17,998     17,998    
Investment, Identifier [Axis]: Equine Network, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   122   122    
Number of shares held [17]           92
Investment, Identifier [Axis]: EverService Midco, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: EverService Midco, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[20],[25],[27]   37,254   37,254    
Fair value at the ending [4],[21],[23],[26],[29],[32] 36,060     36,060    
Investment, Identifier [Axis]: EverView AcquisitionCo, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: EverView AcquisitionCo, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: EverView AcquisitionCo, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[27]   20,750   20,750    
Fair value at the ending [4],[28],[29] 20,749     20,749    
Investment, Identifier [Axis]: Evolve Biologics Inc. (Warrant to purchase the equity) (2)| Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[25]   0   0    
Investment, Identifier [Axis]: Evolve Biologics Inc. (Warrant to purchase the equity) 1 | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16] 0     0    
Investment, Identifier [Axis]: Evolve Biologics Inc. (Warrant to purchase the equity) 2 | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[26] 0     0    
Investment, Identifier [Axis]: Evolve Biologics Inc. (Warrant to purchase the equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   0   0    
Investment, Identifier [Axis]: Excel Testing and Engineering Holdings LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 1,200     1,200    
Investment, Identifier [Axis]: Excel Testing and Engineering Holdings LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 75     75    
Investment, Identifier [Axis]: Excel Testing and Engineering Holdings LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   2,970   2,970    
Fair value at the ending [4],[23] 3,000     3,000    
Investment, Identifier [Axis]: Excelligence Learning Corporation (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   476   476    
Fair value at the ending [4],[14] 1,343     1,343    
Investment, Identifier [Axis]: Excelligence Learning Corporation | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   10,414   10,414    
Fair value at the ending [4],[26] 10,629     10,629    
Investment, Identifier [Axis]: Expedited Travel, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,468   1,468    
Fair value at the ending [4] 1,384     1,384    
Investment, Identifier [Axis]: Expedited Travel, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10],[19]   8,332   8,332    
Fair value at the ending [4],[23],[28],[32],[33] 7,455     7,455    
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   0    
Fair value at the ending [4],[18] $ 0     $ 0    
Number of shares held 66,144 [18]     66,144 [18]   34,944 [17]
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   $ 0    
Fair value at the ending [4],[18] $ 0     $ 0    
Number of shares held 66 [18]     66 [18]   35 [17]
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class A-1 preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   $ 0    
Fair value at the ending [4],[18] $ 22     $ 22    
Number of shares held 78 [18]     78 [18]   41 [17]
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class B common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   $ 0    
Fair value at the ending [4],[18] $ 0     $ 0    
Number of shares held 311,150 [18]     311,150 [18]   164,381 [17]
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class B preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   $ 0    
Fair value at the ending [4],[18] $ 1     $ 1    
Number of shares held 311 [18]     311 [18]   164 [17]
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[25]   18,380   18,380    
Fair value at the ending [4],[23],[26] 17,777     17,777    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   5,158   5,158    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 2,659     2,659    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   9,022   9,022    
Fair value at the ending [4],[23],[32] 8,885     8,885    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   4,815   4,815    
Fair value at the ending [4],[32] 4,742     4,742    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 7,133     7,133    
Investment, Identifier [Axis]: FLEET Response, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       8,851    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending 8,851     8,851    
Investment, Identifier [Axis]: FLEET Response, LLC (Common units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       3,670    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (162)    
Fair value at the ending $ 3,508     $ 3,508    
Number of units held 177,011     177,011    
Investment, Identifier [Axis]: FLEET Response, LLC (Common units) 2 | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[18] $ 0     $ 0    
Number of shares held [18] 838,077     838,077    
Investment, Identifier [Axis]: FLEET Response, LLC (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] $ 3,508     $ 3,508    
Number of shares held 177,011     177,011    
Investment, Identifier [Axis]: FLEET Response, LLC (Preferred units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0    
Transfers in (out)       0    
Purchases (cost)       1,770    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       885    
Fair value at the ending $ 2,655     $ 2,655    
Number of units held 177,011     177,011    
Investment, Identifier [Axis]: FLEET Response, LLC (Preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] $ 2,655     $ 2,655    
Number of shares held 177,011     177,011    
Investment, Identifier [Axis]: FLEET Response, LLC (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0    
Transfers in (out)       379    
Purchases (cost)       0    
Sales and paydowns (cost)       (126)    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending $ 253     253    
Investment, Identifier [Axis]: FLEET Response, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[14] 253     253    
Investment, Identifier [Axis]: FLEET Response, LLC (Series A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[18] $ 0     $ 0    
Number of shares held [18] 46,462     46,462    
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[36]   722   $ 722    
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) (Series A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17],[36]   0   0    
Number of shares held [17],[36]           46,462
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) (common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   0   0    
Number of shares held [17]           838,077
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   8,671   8,671    
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   8,013   8,013    
Investment, Identifier [Axis]: FLEET Response, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6] $ 8,851     8,851    
Investment, Identifier [Axis]: FR Panther Intermediate, LLC (Class A-1 units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[52] $ 1,456     $ 1,456    
Number of shares held [52] 146,186     146,186    
Investment, Identifier [Axis]: FR Panther Intermediate, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] $ 624     $ 624    
Investment, Identifier [Axis]: FR Panther Intermediate, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: FR Panther Intermediate, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21],[32] 10,013     10,013    
Investment, Identifier [Axis]: FR Panther Intermediate, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[24] 1,224     1,224    
Investment, Identifier [Axis]: Familia Dental Group Holdings, LLC (Class A units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       2,623    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (266)    
Fair value at the ending $ 2,357     $ 2,357    
Number of units held 1,525     1,525    
Investment, Identifier [Axis]: Familia Dental Group Holdings, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[18] $ 2,357     $ 2,357    
Number of shares held [18] 1,525     1,525    
Investment, Identifier [Axis]: Fiasco Enterprises, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: Fiasco Enterprises, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   6,684   6,684    
Investment, Identifier [Axis]: Fiasco Enterprises, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[25]   8,063   8,063    
Investment, Identifier [Axis]: Fiasco Enterprises, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   34,951   34,951    
Investment, Identifier [Axis]: Fiasco Enterprises, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 35,428     35,428    
Investment, Identifier [Axis]: Finastra USA, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[31] 4,611     4,611    
Investment, Identifier [Axis]: First Brands Group, LLC 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   92   92    
Fair value at the ending [4],[34] 13     13    
Investment, Identifier [Axis]: First Brands Group, LLC 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   1,408   1,408    
Fair value at the ending [4],[34] 39     39    
Investment, Identifier [Axis]: First Brands Group, LLC 3 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   189   189    
Fair value at the ending [4],[34] 16     16    
Investment, Identifier [Axis]: First Brands Group, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   3,379   3,379    
Fair value at the ending [4],[34] 2,293     2,293    
Investment, Identifier [Axis]: Forest Buyer, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   411   411    
Fair value at the ending [4],[18] $ 525     $ 525    
Number of shares held 1,156 [18]     1,156 [18]   906 [17]
Investment, Identifier [Axis]: Forest Buyer, LLC (Class B units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   1,100   $ 1,100    
Fair value at the ending [4],[18] $ 527     $ 527    
Number of shares held 1,156 [18]     1,156 [18]   906 [17]
Investment, Identifier [Axis]: Forman Mills, Inc. | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[34] $ 1,060     $ 1,060    
Investment, Identifier [Axis]: Fortra, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[27]   9,827   9,827    
Fair value at the ending [4],[29] 3,618     3,618    
Investment, Identifier [Axis]: Freedom U.S. Acquisition Corporation (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Freedom U.S. Acquisition Corporation | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10],[22],[27]   50,650   50,650    
Fair value at the ending [4],[23],[24],[28],[29],[32] 48,732     48,732    
Investment, Identifier [Axis]: Fueled Digital Media, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   675   675    
Fair value at the ending [4],[14] 670     670    
Investment, Identifier [Axis]: Fueled Digital Media, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   5,261   5,261    
Fair value at the ending [4] 5,218     5,218    
Investment, Identifier [Axis]: Fueled Digital Media, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   463   463    
Fair value at the ending [4] 460     460    
Investment, Identifier [Axis]: GBP CSTA Buyer LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   1,455   1,455    
Fair value at the ending [4],[18] $ 1,455     $ 1,455    
Number of shares held 1,454,566 [18]     1,454,566 [18]   1,454,566 [17]
Investment, Identifier [Axis]: GBP CSTA Buyer LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 111     111    
Investment, Identifier [Axis]: GBP CSTA Buyer LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   980   980    
Fair value at the ending [4] 995     995    
Investment, Identifier [Axis]: GC Champion Acquisition LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: GC Champion Acquisition LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   19,904   19,904    
Fair value at the ending [4],[23],[26],[33] 23,663     23,663    
Investment, Identifier [Axis]: GC Champion Acquisition LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   3,530   3,530    
Fair value at the ending [4],[26] 4,197     4,197    
Investment, Identifier [Axis]: GC Champion Acquisition LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   10,590   10,590    
Fair value at the ending [4],[26] 12,590     12,590    
Investment, Identifier [Axis]: Gainsight, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   27,135   27,135    
Fair value at the ending [4],[23],[28],[29] 27,067     27,067    
Investment, Identifier [Axis]: Gargoyle Enterprises, Inc. (Revolver) | Unitranche Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[53]   996   996    
Fair value at the ending [4],[54] 998     998    
Investment, Identifier [Axis]: Gas Media Holdings, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Gas Media Holdings, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   530   530    
Fair value at the ending [4],[14] 250     250    
Investment, Identifier [Axis]: Gas Media Holdings, LLC (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 2,818     $ 2,818    
Number of shares held 4,790     4,790    
Investment, Identifier [Axis]: Gas Media Holdings, LLC (shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   4,194   $ 4,194    
Number of shares held           4,790
Investment, Identifier [Axis]: Gas Media Holdings, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[22]   55,887   55,887    
Fair value at the ending [4],[23],[24],[32] $ 53,256     53,256    
Investment, Identifier [Axis]: Gibson Brands, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   13,093   13,093    
Fair value at the ending [4],[23] 5,010     5,010    
Investment, Identifier [Axis]: Golden State Buyer, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   9,437   9,437    
Investment, Identifier [Axis]: Guardian Restoration Partners Buyer, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   16,641   16,641    
Investment, Identifier [Axis]: Guardian Restoration Partners Buyer, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   2,480   2,480    
Fair value at the ending [4],[14] 999     999    
Investment, Identifier [Axis]: Guardian Restoration Partners Buyer, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[29],[32] 11,396     11,396    
Investment, Identifier [Axis]: Guardian Restoration Partners Buyer, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 19,079     19,079    
Investment, Identifier [Axis]: Guardian Restoration Partners Buyer, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[27]   11,910   11,910    
Investment, Identifier [Axis]: HFZ Capital Group LLC 1            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       13,515    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       39    
Fair value at the ending 13,554     13,554    
Investment, Identifier [Axis]: HFZ Capital Group LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[16],[39],[55] 13,554     13,554    
Investment, Identifier [Axis]: HFZ Capital Group LLC 2            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       4,856    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       13    
Fair value at the ending 4,869     4,869    
Investment, Identifier [Axis]: HFZ Capital Group LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[16],[39],[55] 4,869     4,869    
Investment, Identifier [Axis]: Harlem Acquisition, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   7,031   7,031    
Fair value at the ending [4] $ 6,529     $ 6,529    
Number of shares held 6,095,244     6,095,244   6,095,244
Investment, Identifier [Axis]: Harlem Acquisition, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   5,110   $ 5,110    
Fair value at the ending [4],[14],[15] $ 400     400    
Investment, Identifier [Axis]: Harlem Acquisition, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   914   914    
Fair value at the ending [4],[14] 1,524     1,524    
Investment, Identifier [Axis]: Harlem Acquisition, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21],[23] 31,916     31,916    
Investment, Identifier [Axis]: Harlem Acquisition, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 9,211     9,211    
Investment, Identifier [Axis]: Harlem Acquisition, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[20]   32,078   32,078    
Investment, Identifier [Axis]: Hart Halsey, LLC (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Hart Halsey, LLC (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   259   259    
Fair value at the ending [4],[14],[15] 717     717    
Investment, Identifier [Axis]: Hart Halsey, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,500   1,500    
Fair value at the ending [4],[14] 1,200     1,200    
Investment, Identifier [Axis]: Hart Halsey, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   7,515   7,515    
Fair value at the ending [4],[23] 7,500     7,500    
Investment, Identifier [Axis]: Helping Hands Childrens Services Management, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 3,927     3,927    
Investment, Identifier [Axis]: Helping Hands Childrens Services Management, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Helping Hands Childrens Services Management, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9]   11,443   11,443    
Fair value at the ending [4],[23],[32] 11,385     11,385    
Investment, Identifier [Axis]: Honk Technologies, Inc. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 2,162     $ 2,162    
Number of shares held 2,162,162     2,162,162    
Investment, Identifier [Axis]: Honk Technologies, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] $ 0     $ 0    
Investment, Identifier [Axis]: Honk Technologies, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 4,000     4,000    
Investment, Identifier [Axis]: Hostaway Midco Oy (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13],[56]   0   0    
Fair value at the ending [4],[14],[15],[16],[57] 0     0    
Investment, Identifier [Axis]: Hostaway Midco Oy (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13],[56]   0   0    
Fair value at the ending [4],[14],[16],[57] 0     0    
Investment, Identifier [Axis]: Hostaway Midco Oy | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[25],[56]   25,063   25,063    
Fair value at the ending [4],[16],[26],[57] 25,000     25,000    
Investment, Identifier [Axis]: Huckabee Acquisition, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: Huckabee Acquisition, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Huckabee Acquisition, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[25],[27]   29,475   29,475    
Fair value at the ending [4],[23],[26],[29],[32] 29,325     29,325    
Investment, Identifier [Axis]: IDIG Parent, LLC (Class X units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   36   36    
Fair value at the ending [4],[18] $ 85     $ 85    
Number of shares held 45,610 [18]     45,610 [18]   20,049,000 [17]
Investment, Identifier [Axis]: IDIG Parent, LLC (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   164   $ 164    
Fair value at the ending [4],[18] $ 298     $ 298    
Number of shares held 438,866 [18]     438,866 [18]   192,908 [17]
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (Class A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   357   $ 357    
Fair value at the ending [4] $ 575     $ 575    
Number of shares held 1,566     1,566   1,566
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (Class B common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   $ 0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 1,566     1,566   1,566
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   4,188   4,188    
Fair value at the ending [4],[14] $ 1,743     1,743    
Investment, Identifier [Axis]: IF & P Holdings Company, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   22,649   22,649    
Fair value at the ending [4],[26] 22,734     22,734    
Investment, Identifier [Axis]: IF & P Holdings Company, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   6,419   6,419    
Fair value at the ending [4],[26] 6,431     6,431    
Investment, Identifier [Axis]: IF & P Holdings Company, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,061   1,061    
Fair value at the ending [4] 1,068     1,068    
Investment, Identifier [Axis]: IMMEC Buyer (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: IMMEC Buyer (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   212   212    
Fair value at the ending [4],[14] 212     212    
Investment, Identifier [Axis]: IMMEC Buyer 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 3,748     3,748    
Investment, Identifier [Axis]: IMMEC Buyer 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 8,829     8,829    
Investment, Identifier [Axis]: IMMEC Buyer 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 4,225     4,225    
Investment, Identifier [Axis]: IMMEC Buyer | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   8,900   8,900    
Investment, Identifier [Axis]: InMobi Pte, Ltd. (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[58] $ 895     $ 895    
Number of shares held [16],[58] 48,983     48,983    
Investment, Identifier [Axis]: Incompass, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,117   $ 2,117    
Fair value at the ending [4],[26] $ 2,102     2,102    
Investment, Identifier [Axis]: Incompass, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[25]   24,096   24,096    
Fair value at the ending [4],[26],[32] 23,926     23,926    
Investment, Identifier [Axis]: Independence Buyer, Inc. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 251     251   169
Investment, Identifier [Axis]: Independence Buyer, Inc. (Class B units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   $ 0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 1,291     1,291   872
Investment, Identifier [Axis]: Independence Buyer, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15],[34] $ 0     $ 0    
Investment, Identifier [Axis]: Independence Buyer, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   911   911    
Fair value at the ending [4],[14],[34] 1,187     1,187    
Investment, Identifier [Axis]: Independence Buyer, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   8,207   8,207    
Fair value at the ending [4],[33],[34] 10,677     10,677    
Investment, Identifier [Axis]: Inmar, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   9,850   9,850    
Fair value at the ending [4] 4,337     4,337    
Investment, Identifier [Axis]: Innovative Artists Entertainment, LLC (Equity commitment funded) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[18],[59] 2,390     2,390    
Amount of total commitment [18],[59]       2,445    
Total equity investment [18],[59] 3,536     3,536    
Investment, Identifier [Axis]: Innovative Artists Entertainment, LLC (Equity commitment) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17],[60]   2,109   2,109    
Amount of total commitment [17],[60]   2,445        
Total equity investment [17],[60]           $ 3,536
Investment, Identifier [Axis]: Innovative Artists Entertainment, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Innovative Artists Entertainment, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[22]   20,045   20,045    
Fair value at the ending [4],[23],[24] 20,553     20,553    
Investment, Identifier [Axis]: InsideRE, LLC (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   327   327    
Fair value at the ending [4],[18] $ 268     $ 268    
Number of shares held 284,853 [18]     284,853 [18]   284,853 [17]
Investment, Identifier [Axis]: InsideRE, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   382   $ 382    
Fair value at the ending [4],[14],[15] $ 468     468    
Investment, Identifier [Axis]: InsideRE, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   289   289    
Fair value at the ending [4],[14] 514     514    
Investment, Identifier [Axis]: InsideRE, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   7,202   7,202    
Fair value at the ending [4],[23],[33] 7,165     7,165    
Investment, Identifier [Axis]: InsideRE, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10]   2,799   2,799    
Fair value at the ending [4],[28] 2,785     2,785    
Investment, Identifier [Axis]: Interstate BidCo, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Interstate BidCo, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Interstate BidCo, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[25]   14,722   14,722    
Fair value at the ending [4],[23],[26],[32] 14,581     14,581    
Investment, Identifier [Axis]: Interstate BidCo, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[27]   7,111   7,111    
Fair value at the ending [4],[21],[29] 7,043     7,043    
Investment, Identifier [Axis]: Interstate BidCo, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   8,205   8,205    
Fair value at the ending [4],[23] 8,126     8,126    
Investment, Identifier [Axis]: Interstate BidCo, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   12,384   12,384    
Fair value at the ending [4],[23],[26] 12,267     12,267    
Investment, Identifier [Axis]: Interstate BidCo, LLC 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   10,898   10,898    
Fair value at the ending [4],[24] 10,795     10,795    
Investment, Identifier [Axis]: Ivanti Software, Inc. | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[61]   0   0    
Investment, Identifier [Axis]: Ivanti Software, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[61]   0   0    
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13],[45]   0   0    
Fair value at the ending [4],[14],[15],[16],[46] 0     0    
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13],[45]   2,744   2,744    
Fair value at the ending [4],[14],[16],[46] 2,744     2,744    
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[20],[27],[45]   13,978   13,978    
Fair value at the ending [4],[16],[23],[29],[46] 13,907     13,907    
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[20],[45]   1,472   1,472    
Fair value at the ending [4],[16],[23],[46] 1,465     1,465    
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[20],[45]   6,641   6,641    
Fair value at the ending [4],[16],[21],[46] 6,608     6,608    
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[20],[45]   3,577   3,577    
Fair value at the ending [4],[16],[21],[46] 3,559     3,559    
Investment, Identifier [Axis]: Izzio Artisan Bakery, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   19,060   19,060    
Fair value at the ending [4],[14],[15] 28,731     28,731    
Investment, Identifier [Axis]: Izzio Artisan Bakery, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[20]   14,369   14,369    
Fair value at the ending [4],[23],[28] 14,246     14,246    
Investment, Identifier [Axis]: Izzio Artisan Bakery, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[25]   10,318   10,318    
Fair value at the ending [4],[23],[26] 10,230     10,230    
Investment, Identifier [Axis]: J2 BWA Funding III, LLC (Commitment to purchase equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[17],[62]   811   811    
Fair value at the ending [4],[16],[18] 1,366     1,366    
Investment, Identifier [Axis]: J2 BWA Funding III, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13]   3,556   3,556    
Fair value at the ending [4],[14],[15],[16] 3,656     3,656    
Investment, Identifier [Axis]: J2 BWA Funding LLC (Profit sharing) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[17]   56   56    
Investment, Identifier [Axis]: J2 BWA Funding LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13]   1,706   1,706    
Investment, Identifier [Axis]: JDX Studio, LLC (Class A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   799   799    
Fair value at the ending [4],[18] $ 799     $ 799    
Number of shares held 799,232 [18]     799,232 [18]   799,232 [17]
Investment, Identifier [Axis]: JDX Studio, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: JDX Studio, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: JDX Studio, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   9,929   9,929    
Fair value at the ending [4],[21] 9,948     9,948    
Investment, Identifier [Axis]: Jesse Studio Mezz, LLC (Delayed Draw) | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13]   39,383   39,383    
Investment, Identifier [Axis]: Jesse Studio Mezz, LLC | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16] 38,949     38,949    
Investment, Identifier [Axis]: Jobnimbus Holdings, LLC (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   852   852    
Fair value at the ending [4] $ 799     $ 799    
Number of shares held 214,092     214,092   214,092
Investment, Identifier [Axis]: Jobnimbus Holdings, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: Jobnimbus Holdings, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Jobnimbus Holdings, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[22],[27]   32,000   32,000    
Fair value at the ending [4],[24],[28],[29] 32,000     32,000    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Class A common units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending $ 0     $ 0    
Number of units held 188,000     188,000    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   0   $ 0    
Fair value at the ending [4],[6] $ 0     $ 0    
Number of shares held 188,000     188,000   188,000 [5]
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Class A units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending $ 0     $ 0    
Number of units held 1,566,667     1,566,667    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   0   $ 0    
Fair value at the ending [4],[6] $ 0     $ 0    
Number of shares held 1,566,667     1,566,667   1,566,667 [5]
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Delayed Draw)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   4,431   $ 4,431    
Transfers in (out)       0    
Purchases (cost)       1,998    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (531)    
Fair value at the ending $ 5,898     5,898    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Delayed Draw) | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11],[12],[36]   4,431   4,431    
Fair value at the ending [4],[6],[14],[15],[34] 5,898     5,898    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   748   748    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       (32)    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       39    
Fair value at the ending 755     755    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[36]   748   748    
Fair value at the ending [4],[6],[34] 755     755    
Investment, Identifier [Axis]: K2 Services Venture LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: K2 Services Venture LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   55,057   55,057    
Fair value at the ending [4],[21],[23],[24],[32] 54,522     54,522    
Investment, Identifier [Axis]: K2 Services Venture LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   13,464   13,464    
Fair value at the ending [4],[23],[32] 13,333     13,333    
Investment, Identifier [Axis]: KL Moon Acquisition, LLC (Equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   272   272    
Fair value at the ending [4] 551     551    
Investment, Identifier [Axis]: KL Moon Acquisition, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,260   1,260    
Fair value at the ending [4],[14] 1,802     1,802    
Investment, Identifier [Axis]: KL Moon Acquisition, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   4,234   4,234    
Fair value at the ending [4] 6,287     6,287    
Investment, Identifier [Axis]: KL Moon Acquisition, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   9,873   9,873    
Fair value at the ending [4] 14,661     14,661    
Investment, Identifier [Axis]: KL Moon Acquisition, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,969   1,969    
Fair value at the ending [4] 2,923     2,923    
Investment, Identifier [Axis]: KT Naples UB LLC | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   12,612   12,612    
Fair value at the ending [4],[16] 9,960     9,960    
Investment, Identifier [Axis]: Kar Wash Holdings, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 333     $ 333    
Number of shares held 99,807     99,807    
Investment, Identifier [Axis]: Kar Wash Holdings, LLC (Preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 66     $ 66    
Number of shares held 17,988     17,988    
Investment, Identifier [Axis]: Key Container Borrower, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] $ 0     $ 0    
Investment, Identifier [Axis]: Key Container Borrower, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Key Container Borrower, LLC (Units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[63] $ 543     $ 543    
Number of shares held [63] 555,556     555,556    
Investment, Identifier [Axis]: Key Container Borrower, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[24] $ 4,002     $ 4,002    
Investment, Identifier [Axis]: Keystone Purchaser, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 2,372     2,372    
Investment, Identifier [Axis]: Kingsley Gate Partners, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,198   1,198    
Fair value at the ending [4] 1,440     1,440    
Investment, Identifier [Axis]: Kingsley Gate Partners, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   2,913   2,913    
Fair value at the ending [4],[23],[26] 3,483     3,483    
Investment, Identifier [Axis]: Kingsley Gate Partners, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   936   936    
Fair value at the ending [4],[23] 1,117     1,117    
Investment, Identifier [Axis]: Kingsley Gate Partners, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,352   1,352    
Fair value at the ending [4],[23],[26] 1,617     1,617    
Investment, Identifier [Axis]: LJ Blueprint Buyer, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: LJ Blueprint Buyer, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: LJ Blueprint Buyer, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23],[29] 20,247     20,247    
Investment, Identifier [Axis]: Learn-It Systems, LLC (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   1,159   1,159    
Fair value at the ending [4],[14],[15] 5,322     5,322    
Investment, Identifier [Axis]: Learn-It Systems, LLC (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Learn-It Systems, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Learn-It Systems, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   52,263   52,263    
Fair value at the ending [4],[23],[26] 51,751     51,751    
Investment, Identifier [Axis]: Lessen LLC (Preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 128,737     128,737   128,737
Investment, Identifier [Axis]: Lessen LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   7,276   $ 7,276    
Fair value at the ending [4] $ 6,954     6,954    
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC (Class A shares) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   250   250    
Fair value at the ending [4],[18] $ 541     $ 541    
Number of shares held 269,841 [18]     269,841 [18]   158,730 [17]
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,190   $ 1,190    
Fair value at the ending [4],[14] $ 2,294     2,294    
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   9,600   9,600    
Fair value at the ending [4],[23],[33] 16,235     16,235    
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   11,907   11,907    
Fair value at the ending [4],[23] 14,401     14,401    
Investment, Identifier [Axis]: Liftforward SPV II, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16] 300     300    
Investment, Identifier [Axis]: Light Wave Dental Management, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   2,984   2,984    
Fair value at the ending [4],[18] $ 3,255     $ 3,255    
Number of shares held 321,105 [18]     321,105 [18]   314,621 [17]
Investment, Identifier [Axis]: Light Wave Dental Management, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   4,364   $ 4,364    
Fair value at the ending [4],[14] $ 4,373     4,373    
Investment, Identifier [Axis]: Light Wave Dental Management, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   2,926   2,926    
Fair value at the ending [4],[23] 2,917     2,917    
Investment, Identifier [Axis]: Light Wave Dental Management, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   4,926   4,926    
Fair value at the ending [4],[23] 4,911     4,911    
Investment, Identifier [Axis]: Light Wave Dental Management, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   526   526    
Fair value at the ending [4],[23] 525     525    
Investment, Identifier [Axis]: Light Wave Dental Management, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10],[20]   26,759   26,759    
Fair value at the ending [4],[21],[23],[28],[32] 26,675     26,675    
Investment, Identifier [Axis]: Long Grove Pharmaceuticals, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Long Grove Pharmaceuticals, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   14,409   14,409    
Fair value at the ending [4] 14,695     14,695    
Investment, Identifier [Axis]: MB Purchaser, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: MB Purchaser, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: MB Purchaser, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9]   14,627   14,627    
Fair value at the ending [4],[23],[32] 14,644     14,644    
Investment, Identifier [Axis]: MB Purchaser, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   12,278   12,278    
Fair value at the ending [4],[23] 12,293     12,293    
Investment, Identifier [Axis]: MB Purchaser, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   5,460   5,460    
Fair value at the ending [4],[23] 5,467     5,467    
Investment, Identifier [Axis]: MC Asset Management (Corporate), LLC (Interests)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending 0     $ 0    
Percentage of equity commitments       15.90%    
Investment, Identifier [Axis]: MC Asset Management (Corporate), LLC (Interests) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[16],[18],[55] 0     $ 0    
Percentage of equity commitments [16],[18],[55]       15.90%    
Investment, Identifier [Axis]: MC Asset Management (Corporate), LLC 1            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0    
Transfers in (out)       0    
Purchases (cost)       14,650    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       (22)    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (83)    
Fair value at the ending 14,545     14,545    
Investment, Identifier [Axis]: MC Asset Management (Corporate), LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[16],[55] 14,545     14,545    
Investment, Identifier [Axis]: MC Asset Management (Corporate), LLC 2            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       4,367    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       (8)    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (24)    
Fair value at the ending 4,335     4,335    
Investment, Identifier [Axis]: MC Asset Management (Corporate), LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[16],[55] 4,335     4,335    
Investment, Identifier [Axis]: MC Aviation Limited (Commitment to purchase the equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   $ 23,603   23,603    
Fair value at the ending [4],[6] 25,812     $ 25,812    
Percentage of equity commitments   40.00% [5]   40.00%    
Investment, Identifier [Axis]: MC Aviation Limited, Equity Securities, (commitment to purchase the equity)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   $ 23,603   $ 23,603    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       2,209    
Fair value at the ending 25,812     25,812    
Investment, Identifier [Axis]: MC Voyager SPV II LLC (Equity commitment funded)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   20,522   20,522 0  
Transfers in (out)       0 0  
Purchases (cost)       5,918 13,306  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending 26,440   13,306 26,440 13,306  
Investment, Identifier [Axis]: MC Voyager SPV II LLC (Equity commitment funded) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[13],[64]   20,522   20,522    
Fair value at the ending [4],[6],[16],[65] 26,440     26,440    
Amount of total commitment   20,522 [5],[13],[64]   26,440 [16],[65]    
Total equity investment 45,000 [16],[65]     45,000 [16],[65]   $ 45,000 [5],[13],[64]
Investment, Identifier [Axis]: MC Voyager SPV II LLC (Equity commitment)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Amount of total commitment       26,440 13,306  
Total equity investment 45,000   45,000 45,000 45,000  
Investment, Identifier [Axis]: MEI Buyer LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   2,248   2,248    
Fair value at the ending [4],[14],[15] 2,411     2,411    
Investment, Identifier [Axis]: MEI Buyer LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 1,030     1,030    
Investment, Identifier [Axis]: MEI Buyer LLC (Units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   6,061   6,061    
Fair value at the ending [4] $ 9,028     $ 9,028    
Number of shares held 2,453     2,453   2,275
Investment, Identifier [Axis]: MEI Buyer LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[20],[27]   25,283   $ 25,283    
Fair value at the ending [4],[21],[23],[29] $ 27,118     27,118    
Investment, Identifier [Axis]: MEI Buyer LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[20]   14,196   14,196    
Fair value at the ending [4],[21],[23],[32] 15,227     15,227    
Investment, Identifier [Axis]: MEI Buyer LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   4,043   4,043    
Fair value at the ending [4],[23] 4,337     4,337    
Investment, Identifier [Axis]: MV Receivables II, LLC (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[17]   0   0    
Fair value at the ending [4],[16],[18] $ 0     $ 0    
Number of shares held 3,280 [16],[18]     3,280 [16],[18]   1,822 [13],[17]
Investment, Identifier [Axis]: MV Receivables II, LLC (Warrant to purchase the equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[17]   0   $ 0    
Fair value at the ending [4],[16],[18] $ 0     0    
Investment, Identifier [Axis]: MV Receivables II, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[36]   4,452   4,452    
Fair value at the ending [4],[16],[34] 8,014     8,014    
Investment, Identifier [Axis]: MYOB US Borrower, LLC (fka ETA Australia Holdings III Pty Ltd and MYOB US Borrower LLC) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[66],[67]   26,281   26,281    
Investment, Identifier [Axis]: MYOB US Borrower, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[68],[69] 28,501     28,501    
Investment, Identifier [Axis]: Madison Logic Holdings, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Madison Logic Holdings, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   12,586   12,586    
Fair value at the ending [4],[26] 12,448     12,448    
Investment, Identifier [Axis]: Maltese Diplomat Owner 100 LLC (Delayed Draw) | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13]   50,120   50,120    
Fair value at the ending [4],[14],[15],[16] 50,565     50,565    
Investment, Identifier [Axis]: Mammoth Holdings, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   655   655    
Fair value at the ending [4],[14] 80     80    
Investment, Identifier [Axis]: Mammoth Holdings, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[20]   21,008   21,008    
Fair value at the ending [4],[21],[32] 20,709     20,709    
Investment, Identifier [Axis]: Mammoth Holdings, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   5,280   5,280    
Fair value at the ending [4] 5,205     5,205    
Investment, Identifier [Axis]: Matterhorn Finco, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[16] 0     0    
Investment, Identifier [Axis]: Matterhorn Finco, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[24] 4,333     4,333    
Investment, Identifier [Axis]: Max US Bidco Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   7,796   7,796    
Fair value at the ending [4],[26] 4,507     4,507    
Investment, Identifier [Axis]: McKissock Investment Holdings, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   9,364   9,364    
Investment, Identifier [Axis]: Medallia, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   9,875   9,875    
Fair value at the ending [4],[33],[34] 6,198     6,198    
Investment, Identifier [Axis]: Milrose Consultants, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,154   1,154    
Investment, Identifier [Axis]: Milrose Consultants, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[25],[27]   44,053   44,053    
Investment, Identifier [Axis]: Milrose Consultants, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   1,589   1,589    
Investment, Identifier [Axis]: Milrose Consultants, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   3,536   3,536    
Investment, Identifier [Axis]: Milrose Consultants, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   9,209   9,209    
Investment, Identifier [Axis]: Milrose Consultants, LLC 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   4,204   4,204    
Investment, Identifier [Axis]: Mindbody, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Investment, Identifier [Axis]: Mindbody, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   690   690    
Investment, Identifier [Axis]: Mindbody, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25],[27]   22,655   22,655    
Investment, Identifier [Axis]: Mission Critical Group, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   1,559   1,559    
Investment, Identifier [Axis]: Mission Critical Group, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Investment, Identifier [Axis]: Mission Critical Group, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   7,013   7,013    
Investment, Identifier [Axis]: Mooring Primary, LLC (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 2,689     2,689   2,576
Investment, Identifier [Axis]: Mooring Primary, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: Mooring Primary, LLC (Preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,522   2,522    
Fair value at the ending [4] $ 2,664     $ 2,664    
Number of shares held 2,687     2,687   2,574
Investment, Identifier [Axis]: Mooring Primary, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: Mooring Primary, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[22]   13,885   13,885    
Fair value at the ending [4],[23],[24] 13,837     13,837    
Investment, Identifier [Axis]: NBPT Acquisition LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   664   664    
Fair value at the ending [4],[14],[15] 978     978    
Investment, Identifier [Axis]: NBPT Acquisition LLC (Preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[70]   4,582   4,582    
Fair value at the ending [4],[71] $ 3,816     $ 3,816    
Number of shares held 4,421 [71]     4,421 [71]   4,421 [70]
Investment, Identifier [Axis]: NBPT Acquisition LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 468     468    
Investment, Identifier [Axis]: NBPT Acquisition LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   20,886   20,886    
Fair value at the ending [4],[24] 20,626     20,626    
Investment, Identifier [Axis]: NFM & J, L.P. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,846   1,846    
Fair value at the ending [4],[14] 2,808     2,808    
Investment, Identifier [Axis]: NFM & J, L.P. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19],[25]   13,050   13,050    
Fair value at the ending [4],[26],[28],[33] 12,956     12,956    
Investment, Identifier [Axis]: NFM & J, L.P. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   818   818    
Fair value at the ending [4] 813     813    
Investment, Identifier [Axis]: NFS Intermediate HoldCo, LLC (Series B preferred units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   60,650   60,650 0  
Transfers in (out)       0 0  
Purchases (cost)       0 53,255  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       3,157 0  
Fair value at the ending $ 63,807   $ 53,255 $ 63,807 $ 53,255  
Number of units held 53,255   53,255 53,255 53,255  
Investment, Identifier [Axis]: NFS Intermediate HoldCo, LLC (Series B preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[13],[17]   60,650   $ 60,650    
Fair value at the ending [4],[6],[16],[18] $ 63,807     $ 63,807    
Number of shares held 53,255 [16],[18]     53,255 [16],[18]   53,255 [5],[13],[17]
Investment, Identifier [Axis]: NQ PE Project Colosseum Midco Inc. (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   142   $ 142    
Fair value at the ending [4] $ 249     $ 249    
Number of shares held 1,691,747     1,691,747   1,364,614
Investment, Identifier [Axis]: NQ PE Project Colosseum Midco Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: NQ PE Project Colosseum Midco Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   12,596   12,596    
Fair value at the ending [4] 16,167     16,167    
Investment, Identifier [Axis]: Narrative Strategies Acquisition, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Narrative Strategies Acquisition, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Narrative Strategies Acquisition, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[22]   7,781   7,781    
Fair value at the ending [4],[23],[24] 7,780     7,780    
Investment, Identifier [Axis]: Nastel Technologies, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   3,496   3,496 $ 3,478  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       8 7  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (4) 6  
Fair value at the ending 3,500   $ 3,491 3,500 3,491  
Investment, Identifier [Axis]: Nastel Technologies, LLC (Class A units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   5,504   5,504 4,611  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       1,016 613  
Fair value at the ending $ 6,520   $ 5,224 $ 6,520 $ 5,224  
Number of units held 3,408   3,408 3,408 3,408  
Investment, Identifier [Axis]: Nastel Technologies, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[17]   5,504   $ 5,504    
Fair value at the ending [4],[6],[18] $ 6,520     $ 6,520    
Number of shares held 3,408 [18]     3,408 [18]   3,408 [5],[17]
Investment, Identifier [Axis]: Nastel Technologies, LLC (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0 $ 0  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending $ 0   $ 0 0 0  
Investment, Identifier [Axis]: Nastel Technologies, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11]   0   0    
Fair value at the ending [4],[6],[14] 0     0    
Investment, Identifier [Axis]: Nastel Technologies, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[19]   3,496   3,496    
Fair value at the ending [4],[6],[33] 3,500     3,500    
Investment, Identifier [Axis]: Nasuni Corporation (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Nasuni Corporation 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21],[29] 7,797     7,797    
Investment, Identifier [Axis]: Nasuni Corporation | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[27]   15,150   15,150    
Fair value at the ending [4],[28],[29] 14,970     14,970    
Investment, Identifier [Axis]: NationsBenefits, LLC (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   2,665   2,665    
Fair value at the ending [4],[18] $ 3,250     $ 3,250    
Number of shares held 433,334 [18]     433,334 [18]   326,667 [17]
Investment, Identifier [Axis]: NationsBenefits, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   1,444   $ 1,444    
Fair value at the ending [4],[14],[15] $ 12,207     12,207    
Investment, Identifier [Axis]: NationsBenefits, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   7,219   7,219    
Fair value at the ending [4] 7,219     7,219    
Investment, Identifier [Axis]: NationsBenefits, LLC (Series B units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   5,333   5,333    
Fair value at the ending [4],[18] $ 6,951     $ 6,951    
Number of shares held 490,587 [18]     490,587 [18]   369,827 [17]
Investment, Identifier [Axis]: NationsBenefits, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[20],[22],[27]   64,326   $ 64,326    
Fair value at the ending [4],[21],[23],[24],[29],[32] $ 64,003     64,003    
Investment, Identifier [Axis]: Nearly Natural, Inc. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 152,174     152,174    
Investment, Identifier [Axis]: Nearly Natural, Inc. (Class AA units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 15     $ 15    
Number of shares held 61,087     61,087    
Investment, Identifier [Axis]: Nearly Natural, Inc. (Class AAA units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 109     $ 109    
Number of shares held 62,034     62,034    
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,098   1,098    
Fair value at the ending [4],[14] 2,031     2,031    
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[22]   25,025   25,025    
Fair value at the ending [4],[21],[24] 24,875     24,875    
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   7,429   7,429    
Fair value at the ending [4],[24] 7,385     7,385    
Investment, Identifier [Axis]: New Engen, Inc. (Class B common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   182   182    
Fair value at the ending [4] $ 167     $ 167    
Number of shares held 5,067     5,067   5,067
Investment, Identifier [Axis]: New Engen, Inc. (Preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   417   $ 417    
Fair value at the ending [4] $ 401     $ 401    
Number of shares held 417     417   417
Investment, Identifier [Axis]: New Engen, Inc. 1 | Unitranche Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   7,048   $ 7,048    
Investment, Identifier [Axis]: New Engen, Inc. 2 | Unitranche Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   7,772   7,772    
Investment, Identifier [Axis]: New Engen, Inc. 3 | Unitranche Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10]   2,370   2,370    
Investment, Identifier [Axis]: Niteo Products, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] $ 458     458    
Investment, Identifier [Axis]: Niteo Products, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   23,148   23,148    
Fair value at the ending [4],[23] 23,418     23,418    
Investment, Identifier [Axis]: Northeast Contracting Company, LLC (Class A-2 units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   6,293   6,293    
Fair value at the ending [4],[18] $ 7,204     $ 7,204    
Number of shares held 7,429,462 [18]     7,429,462 [18]   6,191,218 [17]
Investment, Identifier [Axis]: Northeast Contracting Company, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   341   $ 341    
Fair value at the ending [4],[14] $ 1,224     1,224    
Investment, Identifier [Axis]: Northeast Contracting Company, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   7,399   7,399    
Fair value at the ending [4] 8,816     8,816    
Investment, Identifier [Axis]: OPOC Acquisition, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   361   361    
Fair value at the ending [4],[14],[15] 642     642    
Investment, Identifier [Axis]: OPOC Acquisition, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: OPOC Acquisition, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   12,944   12,944    
Fair value at the ending [4],[21] 12,934     12,934    
Investment, Identifier [Axis]: OWL Acquisition, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   277   277    
Fair value at the ending [4],[14],[15] 263     263    
Investment, Identifier [Axis]: OWL Acquisition, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 602     602    
Investment, Identifier [Axis]: OWL Acquisition, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[25]   16,586   16,586    
Fair value at the ending [4],[26] 15,749     15,749    
Investment, Identifier [Axis]: Onix Networking Corp. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Onix Networking Corp. (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,110   2,110    
Fair value at the ending [4] $ 2,772     $ 2,772    
Number of shares held 2,000,000     2,000,000   2,000,000
Investment, Identifier [Axis]: Onix Networking Corp. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   4,478   $ 4,478    
Fair value at the ending [4],[23] $ 4,455     4,455    
Investment, Identifier [Axis]: Onix Networking Corp. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[25]   14,700   14,700    
Fair value at the ending [4],[23],[26] 14,625     14,625    
Investment, Identifier [Axis]: Optomi, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   615   615    
Fair value at the ending [4],[18] $ 653     $ 653    
Number of shares held 278 [18]     278 [18]   278 [17]
Investment, Identifier [Axis]: Optomi, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,594   $ 1,594    
Fair value at the ending [4],[14] $ 61     61    
Investment, Identifier [Axis]: Optomi, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[25]   5,512   5,512    
Fair value at the ending [4],[23],[28] 5,484     5,484    
Investment, Identifier [Axis]: Optomi, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19]   12,994   12,994    
Fair value at the ending [4] 2,126     2,126    
Investment, Identifier [Axis]: Optomi, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[28],[33] 12,926     12,926    
Investment, Identifier [Axis]: Ossio, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Ossio, Inc. (Warrant shares) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 103     $ 103    
Number of shares held 30,279     30,279    
Investment, Identifier [Axis]: Ossio, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 19,835     $ 19,835    
Investment, Identifier [Axis]: Ossio, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 2,470     2,470    
Investment, Identifier [Axis]: PAI Middle Tier, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   538   538    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: PAI Middle Tier, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22],[27]   17,838   17,838    
Fair value at the ending [4],[24],[29] 17,500     17,500    
Investment, Identifier [Axis]: PC Pest Buyer, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   32,367   32,367    
Investment, Identifier [Axis]: PC Pest Buyer, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: PC Pest Buyer, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23],[26] 13,790     13,790    
Investment, Identifier [Axis]: PC Pest Buyer, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 41,647     41,647    
Investment, Identifier [Axis]: PC Pest Buyer, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[25]   13,867   13,867    
Investment, Identifier [Axis]: PFI Lower Midco, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   5,548   5,548    
Fair value at the ending [4],[23] 5,517     5,517    
Investment, Identifier [Axis]: PNE Interco LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   4,419   4,419    
Fair value at the ending [4],[14],[15],[26] 4,353     4,353    
Investment, Identifier [Axis]: PNE Interco LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 2,360     2,360    
Investment, Identifier [Axis]: PNE Interco LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19],[20],[25]   13,790   13,790    
Fair value at the ending [4],[23],[26],[33] 13,720     13,720    
Investment, Identifier [Axis]: PRGX Global, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,970   1,970    
Fair value at the ending [4],[14] 1,881     1,881    
Investment, Identifier [Axis]: PRGX Global, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[20],[27]   35,673   35,673    
Fair value at the ending [4],[21],[23],[29] 34,344     34,344    
Investment, Identifier [Axis]: PVHC Holding Corp | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[34] 169     169    
Investment, Identifier [Axis]: Palmdale Oil Company LLC (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: Palmdale Oil Company LLC (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: Palmdale Oil Company LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Palmdale Oil Company LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   4,326   4,326    
Fair value at the ending [4],[23] 5,641     5,641    
Investment, Identifier [Axis]: Panda Acquisition, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   9,630   9,630    
Fair value at the ending [4] 15,319     15,319    
Investment, Identifier [Axis]: Parkhub, Inc. (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   8,955   8,955    
Fair value at the ending [4],[14],[15] 2,241     2,241    
Investment, Identifier [Axis]: Parkhub, Inc. (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   1,592   1,592    
Fair value at the ending [4],[14],[15] 14,207     14,207    
Investment, Identifier [Axis]: Parkhub, Inc. (Delayed Draw) 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13],[43]   3,155   3,155    
Investment, Identifier [Axis]: Parkhub, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   2,020   2,020    
Fair value at the ending [4],[14] 2,020     2,020    
Investment, Identifier [Axis]: Parkhub, Inc. (Series A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,761   1,761    
Fair value at the ending [4] $ 1,790     $ 1,790    
Number of shares held 1,178,344     1,178,344   1,178,344
Investment, Identifier [Axis]: Parkhub, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[27]   16,369   $ 16,369    
Fair value at the ending [4],[29] $ 16,369     16,369    
Investment, Identifier [Axis]: Parkhub, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[43]   36,110   36,110    
Fair value at the ending [4],[16],[44] 35,539     35,539    
Investment, Identifier [Axis]: Parkhub, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[44] 3,105     3,105    
Investment, Identifier [Axis]: Patagonia Holdco LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[25]   10,821   10,821    
Fair value at the ending [4],[16],[23] 11,000     11,000    
Investment, Identifier [Axis]: Phia Purchaser, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Phia Purchaser, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Phia Purchaser, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   7,920   7,920    
Fair value at the ending [4],[32] 7,968     7,968    
Investment, Identifier [Axis]: Phoenix Chemical Holding Company LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[34] 80     80    
Investment, Identifier [Axis]: Planful, Inc. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 1,119     $ 1,119    
Number of shares held 473,082     473,082    
Investment, Identifier [Axis]: Planful, Inc. (Class B units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 40     $ 40    
Number of shares held 35,791     35,791    
Investment, Identifier [Axis]: Planful, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 1,104     $ 1,104    
Investment, Identifier [Axis]: Planful, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21] 9,495     9,495    
Investment, Identifier [Axis]: Planful, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21] 530     530    
Investment, Identifier [Axis]: Planful, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21] 707     707    
Investment, Identifier [Axis]: Planful, Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21] 1,454     1,454    
Investment, Identifier [Axis]: Planful, Inc. 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21] 1,325     1,325    
Investment, Identifier [Axis]: Planful, Inc. 6 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21] 883     883    
Investment, Identifier [Axis]: Polychem Acquisition, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,582   1,582    
Fair value at the ending [4] 2,300     2,300    
Investment, Identifier [Axis]: Polyventive Lender Holding Company LLC (Equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 0     0    
Investment, Identifier [Axis]: Power Stop, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   4,584   4,584    
Fair value at the ending [4],[21] 5,040     5,040    
Investment, Identifier [Axis]: PrecisionX Group, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   600   600    
Investment, Identifier [Axis]: PrecisionX Group, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   2,536   2,536    
Investment, Identifier [Axis]: PrecisionX Group, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[20]   15,640   15,640    
Investment, Identifier [Axis]: PrecisionX Group, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   8,034   8,034    
Investment, Identifier [Axis]: PrecisionX Group, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   5,929   5,929    
Investment, Identifier [Axis]: PrecisionX Group, LLC 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   5,966   5,966    
Investment, Identifier [Axis]: PrecisionX Group, LLC 6 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   3,735   3,735    
Investment, Identifier [Axis]: PrecisionX Group, LLC 7 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   1,803   1,803    
Investment, Identifier [Axis]: Premier Roofing L.L.C. (Class A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 198     $ 198    
Number of shares held 20     20    
Investment, Identifier [Axis]: Premier Roofing L.L.C. (Class B common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 14     $ 14    
Number of shares held 198     198    
Investment, Identifier [Axis]: Premier Roofing L.L.C. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[36]   572   $ 572    
Fair value at the ending [4],[14],[34] $ 0     0    
Investment, Identifier [Axis]: Premier Roofing L.L.C. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   1,533   1,533    
Fair value at the ending [4],[34] 2,423     2,423    
Investment, Identifier [Axis]: Project Accelerate Parent, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Project Accelerate Parent, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   11,714   11,714    
Fair value at the ending [4],[23] 11,637     11,637    
Investment, Identifier [Axis]: Project Tahoe Acquisition Corporation (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Project Tahoe Acquisition Corporation | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 14,464     14,464    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13],[66],[67]   0   0    
Fair value at the ending [4],[14],[15],[16],[68],[69] 1,276     1,276    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13],[66],[67]   0   0    
Fair value at the ending [4],[14],[15],[16],[68] 127     127    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd (Revolver) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13],[66]   0   0    
Fair value at the ending [4],[14],[16],[68] 0     0    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd (Revolver) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13],[66],[67]   0   0    
Fair value at the ending [4],[14],[16],[68],[69] 0     0    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[68],[69] 22,030     22,030    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[26],[68] 5,672     5,672    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[66],[67]   21,140   21,140    
Investment, Identifier [Axis]: Prototek LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[36]   0   0    
Fair value at the ending [4],[14],[34] 117     117    
Investment, Identifier [Axis]: Prototek LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   5,139   5,139    
Fair value at the ending [4],[34] 5,894     5,894    
Investment, Identifier [Axis]: Pursuit Buyer, LLC (Class A-1 units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 587     $ 587    
Number of shares held 5,800     5,800    
Investment, Identifier [Axis]: Pursuit Buyer, LLC (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] $ 711     $ 711    
Investment, Identifier [Axis]: Pursuit Buyer, LLC (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Pursuit Buyer, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Pursuit Buyer, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[33] 14,500     14,500    
Investment, Identifier [Axis]: Quest Resource Management Group, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Quest Resource Management Group, LLC (Warrant to purchase the equity) 1 | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   51   51    
Fair value at the ending [4] 102     102    
Investment, Identifier [Axis]: Quest Resource Management Group, LLC (Warrant to purchase the equity) 2 | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   36   36    
Fair value at the ending [4] 72     72    
Investment, Identifier [Axis]: Quest Resource Management Group, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   12,841   12,841    
Fair value at the ending [4] 11,879     11,879    
Investment, Identifier [Axis]: RC & CY New Orleans Sole Member, LLC | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   30,003   30,003    
Fair value at the ending [4],[16] 30,072     30,072    
Investment, Identifier [Axis]: Radiate Holdco, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[61]   10   10    
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 536     536    
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. (Series A-2 preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   4,154   4,154    
Fair value at the ending [4] $ 4,775     $ 4,775    
Number of shares held 3,967     3,967   3,295
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   7,480   $ 7,480    
Fair value at the ending [4],[23] $ 7,369     7,369    
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   7,142   7,142    
Fair value at the ending [4],[24] 4,975     4,975    
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   5,178   5,178    
Fair value at the ending [4],[23] 7,036     7,036    
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 5,101     5,101    
Investment, Identifier [Axis]: Randys Holdings, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   4,594   4,594    
Fair value at the ending [4],[14],[15] 5,561     5,561    
Investment, Identifier [Axis]: Randys Holdings, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 256     256    
Investment, Identifier [Axis]: Randys Holdings, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19],[25]   16,534   16,534    
Fair value at the ending [4],[26],[28],[33] 16,449     16,449    
Investment, Identifier [Axis]: Really Great Reading Company, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Really Great Reading Company, Inc. (Series A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   64   64    
Fair value at the ending [4] $ 16     $ 16    
Number of shares held 369     369   369
Investment, Identifier [Axis]: Really Great Reading Company, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[10]   11,364   $ 11,364    
Fair value at the ending [4],[23],[28] $ 11,182     11,182    
Investment, Identifier [Axis]: Recorded Future, Inc. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 120,729     120,729   40,243
Investment, Identifier [Axis]: Recycled Plastics Industries, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Investment, Identifier [Axis]: Recycled Plastics Industries, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   4,161   4,161    
Investment, Identifier [Axis]: Relevant Industrial, LLC (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   417   417    
Fair value at the ending [4],[14],[15] $ 2,865     2,865    
Investment, Identifier [Axis]: Relevant Industrial, LLC (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Relevant Industrial, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   304   304    
Fair value at the ending [4],[14] 380     380    
Investment, Identifier [Axis]: Relevant Industrial, LLC (Units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   4,689   4,689    
Fair value at the ending [4] $ 6,239     $ 6,239    
Number of shares held 4,877,048     4,877,048   4,877,048
Investment, Identifier [Axis]: Relevant Industrial, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   17,413   $ 17,413    
Fair value at the ending [4],[23] $ 17,325     17,325    
Investment, Identifier [Axis]: Relevate Health Group, LLC (Class B common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   43   43    
Fair value at the ending [4] $ 179     $ 179    
Number of shares held 136     136   96
Investment, Identifier [Axis]: Relevate Health Group, LLC (Class X common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   6   $ 6    
Fair value at the ending [4] $ 26     $ 26    
Number of shares held 20     20   14
Investment, Identifier [Axis]: Relevate Health Group, LLC (Class X preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   14   $ 14    
Fair value at the ending [4] $ 20     $ 20    
Number of shares held 20     20   14
Investment, Identifier [Axis]: Relevate Health Group, LLC (Preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   96   $ 96    
Fair value at the ending [4] $ 136     $ 136    
Number of shares held 136     136   96
Investment, Identifier [Axis]: Relevate Health Group, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: Relevate Health Group, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   1,111   1,111    
Fair value at the ending [4],[23],[26] 1,383     1,383    
Investment, Identifier [Axis]: Relevate Health Group, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19]   1,899   1,899    
Fair value at the ending [4],[23],[28],[33] 3,305     3,305    
Investment, Identifier [Axis]: Relevate Health Group, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[10]   5,062   5,062    
Fair value at the ending [4],[23],[28] 5,036     5,036    
Investment, Identifier [Axis]: Relevate Health Group, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   849   849    
Fair value at the ending [4],[23] 1,479     1,479    
Investment, Identifier [Axis]: Removery, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   12,000   12,000    
Fair value at the ending [4],[23],[24] 12,000     12,000    
Investment, Identifier [Axis]: Reorganized Mobileum AcquisitionCo, LLC (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   567   567    
Number of shares held           42,031
Investment, Identifier [Axis]: Reorganized Mobileum AcquisitionCo, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   870   870    
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   263   263    
Number of shares held [25]           50,029
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   2,233   2,233    
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   549   549    
Investment, Identifier [Axis]: Residential Homes for Rent LLC (Series A preferred units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       3,183    
Purchases (cost)       2,034    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       60    
Fair value at the ending $ 5,277     $ 5,277    
Number of shares held 1,208,942     1,208,942    
Investment, Identifier [Axis]: Residential Homes for Rent LLC (Series A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[17]   2,751   $ 2,751    
Fair value at the ending [4],[16],[18] $ 5,277     $ 5,277    
Number of shares held 1,208,942 [16],[18]     1,208,942 [16],[18]   736,539 [13],[17]
Investment, Identifier [Axis]: Residential Homes for Rent LLC (Warrant to purchase the equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[17]   920   $ 920    
Fair value at the ending [4],[16],[18] $ 1,691     1,691    
Investment, Identifier [Axis]: Residential Homes for Rent LLC (warrant to purchase up to 2.6% of the equity)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       512    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       1,179    
Fair value at the ending 1,691     $ 1,691    
Percentage of equity commitments       2.60%    
Investment, Identifier [Axis]: Resin Solutions LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Investment, Identifier [Axis]: Resin Solutions LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 204     204    
Investment, Identifier [Axis]: Resin Solutions LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 10,945     10,945    
Investment, Identifier [Axis]: Resin Solutions LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 2,246     2,246    
Investment, Identifier [Axis]: Resin Solutions LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   10,973   10,973    
Investment, Identifier [Axis]: Resolute Investment Managers, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   14,670   14,670    
Fair value at the ending [4] 12,230     12,230    
Investment, Identifier [Axis]: Rita's Franchise Company, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Rita's Franchise Company, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   14,624   14,624    
Fair value at the ending [4],[21] 14,543     14,543    
Investment, Identifier [Axis]: Ro Health, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   320   320    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Ro Health, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   3,726   3,726    
Fair value at the ending [4],[24] 3,708     3,708    
Investment, Identifier [Axis]: Rocket Software, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 4,739     4,739    
Investment, Identifier [Axis]: SCP ADV Infusion Purchaser, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   9,095   9,095    
Fair value at the ending [4],[14],[15] 8,919     8,919    
Investment, Identifier [Axis]: SCP ADV Infusion Purchaser, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: SCP ADV Infusion Purchaser, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   9,615   9,615    
Fair value at the ending [4],[23],[24] 9,429     9,429    
Investment, Identifier [Axis]: SCP Baked Goods Holdings, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: SCP Baked Goods Holdings, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: SCP Baked Goods Holdings, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   8,964   8,964    
Fair value at the ending [4],[23] 8,910     8,910    
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   18,738   18,738    
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 361     361    
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[25]   8,977   8,977    
Fair value at the ending [4],[26],[28] 8,931     8,931    
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   10,084   10,084    
Fair value at the ending [4],[32] 10,032     10,032    
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   7,888   7,888    
Fair value at the ending [4],[32] 7,848     7,848    
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 20,348     20,348    
Investment, Identifier [Axis]: SCP Intermediate Holdings, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13]   0   0    
Fair value at the ending [4],[14],[15],[16] 0     0    
Investment, Identifier [Axis]: SCP Intermediate Holdings, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[13]   2,911   2,911    
Fair value at the ending [4],[16],[23] 2,895     2,895    
Investment, Identifier [Axis]: SDG Corporation (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: SDG Corporation (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: SDG Corporation | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   5,926   5,926    
Fair value at the ending [4],[23] 6,000     6,000    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   4,028   4,028    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   493   493    
Fair value at the ending [4],[14] 988     988    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[20],[25]   21,021   21,021    
Fair value at the ending [4],[21],[23],[26],[32] 20,914     20,914    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   8,491   8,491    
Fair value at the ending [4],[21] 8,448     8,448    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   11,751   11,751    
Fair value at the ending [4],[21],[26] 11,703     11,703    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   7,893   7,893    
Fair value at the ending [4],[24] 9,833     9,833    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[21] 7,862     7,862    
Investment, Identifier [Axis]: SFR Holdco 2, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   4,937   4,937    
Transfers in (out)       (5,119)    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       182    
Fair value at the ending 0     0    
Investment, Identifier [Axis]: SFR Holdco 2, LLC (Delayed Draw)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning         2,267  
Transfers in (out)         0  
Purchases (cost)         1,425  
Sales and paydowns (cost)         0  
PIK interest capitalized (cost)         0  
Discount accretion         0  
Net realized gain (loss)         0  
Net change in unrealized gain (loss)         (5)  
Fair value at the ending     3,687   3,687  
Investment, Identifier [Axis]: SFR Holdco 2, LLC (Equity commitments)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   3,464   3,464 1,510  
Transfers in (out)       (3,412) 0  
Purchases (cost)       0 950  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (52) 101  
Fair value at the ending 0   2,561 $ 0 $ 2,561  
Percentage of equity commitments       24.40% 24.40%  
Investment, Identifier [Axis]: SFR Holdco 2, LLC (Equity commitments) | Controlled affiliate company investment            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0    
Transfers in (out)       3,412    
Purchases (cost)       2,045    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       (4)    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       118    
Fair value at the ending 5,571     $ 5,571    
Percentage of equity commitments       38.30%    
Investment, Identifier [Axis]: SFR Holdco 2, LLC (Equity commitments) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[13]   $ 3,464   $ 3,464    
Fair value at the ending [4],[6],[16] 5,571     $ 5,571    
Percentage of equity commitments   24.40% [5],[13]   38.30% [16]    
Investment, Identifier [Axis]: SFR Holdco 2, LLC | Controlled affiliate company investment            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   $ 0   $ 0    
Transfers in (out)       5,119    
Purchases (cost)       2,925    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (553)    
Fair value at the ending 7,491     7,491    
Investment, Identifier [Axis]: SFR Holdco 2, LLC | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[13]   4,937   4,937    
Fair value at the ending [4],[6],[16] 7,491     7,491    
Investment, Identifier [Axis]: SFR Holdco, LLC (Equity commitments)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   8,669   8,669 $ 8,394  
Transfers in (out)       (6,825) 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (1,844) 209  
Fair value at the ending 0   8,603 $ 0 $ 8,603  
Percentage of equity commitments       24.40% 24.40%  
Investment, Identifier [Axis]: SFR Holdco, LLC (Equity commitments) | Controlled affiliate company investment            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0    
Transfers in (out)       6,825    
Purchases (cost)       5,052    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       (119)    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       1,860    
Fair value at the ending 13,618     $ 13,618    
Percentage of equity commitments       38.30%    
Investment, Identifier [Axis]: SFR Holdco, LLC (Equity commitments) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[13]   $ 8,669   $ 8,669    
Fair value at the ending [4],[6],[16] 13,618     $ 13,618    
Percentage of equity commitments   24.40% [5],[13]   38.30% [16]    
Investment, Identifier [Axis]: SFR Holdco, LLC 1            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   $ 5,875   $ 5,875 $ 5,593  
Transfers in (out)       (5,850) 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (25) 5  
Fair value at the ending 0   5,598 0 5,598  
Investment, Identifier [Axis]: SFR Holdco, LLC 1 | Controlled affiliate company investment            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       5,850    
Purchases (cost)       5,850    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (238)    
Fair value at the ending 11,462     11,462    
Investment, Identifier [Axis]: SFR Holdco, LLC 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[13]   5,875   5,875    
Fair value at the ending [4],[6],[16] 11,462     11,462    
Investment, Identifier [Axis]: SFR Holdco, LLC 2            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   4,839   4,839 4,631  
Transfers in (out)       (4,387) 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (452) 50  
Fair value at the ending 0   4,681 0 4,681  
Investment, Identifier [Axis]: SFR Holdco, LLC 2 | Controlled affiliate company investment            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       4,387    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       353    
Fair value at the ending 4,740     4,740    
Investment, Identifier [Axis]: SFR Holdco, LLC 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[13]   4,839   4,839    
Fair value at the ending [4],[6],[16] 4,740     4,740    
Investment, Identifier [Axis]: SHOOK Research, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   1,539   1,539    
Fair value at the ending [4],[18] $ 1,475     $ 1,475    
Number of shares held 1,483,871 [18]     1,483,871 [18]   1,483,871 [17]
Investment, Identifier [Axis]: SHOOK Research, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: SHOOK Research, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[10]   11,570   11,570    
Fair value at the ending [4],[23],[28] 11,414     11,414    
Investment, Identifier [Axis]: SIP Care Services, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   357   357    
Fair value at the ending [4] 727     727    
Investment, Identifier [Axis]: SIP Care Services, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   140   140    
Fair value at the ending [4],[26] 141     141    
Investment, Identifier [Axis]: SIP Care Services, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19],[25]   4,152   4,152    
Fair value at the ending [4],[26],[28],[33] 4,202     4,202    
Investment, Identifier [Axis]: SIRVA Worldwide Inc. (Class A common shares) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 1,126     1,126    
Investment, Identifier [Axis]: SIRVA Worldwide Inc. (Class A preferred shares) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 242     $ 242    
Number of shares held 259     259    
Investment, Identifier [Axis]: STATS Intermediate Holdings, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   13,953   $ 13,953    
Fair value at the ending [4],[26] $ 7,346     7,346    
Investment, Identifier [Axis]: Sabrosura Foods, LLC et al (Class A interests) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 171,429     171,429   171,429
Investment, Identifier [Axis]: Sabrosura Foods, LLC et al (Class AA units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   $ 0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 7,022     7,022   7,022
Investment, Identifier [Axis]: Sabrosura Foods, LLC et al (Class AAA units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   $ 0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 8,322     8,322   8,322
Investment, Identifier [Axis]: Security Services Acquisition Sub Corp. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[25]   35,716   $ 35,716    
Fair value at the ending [4],[21],[26] $ 40,327     40,327    
Investment, Identifier [Axis]: Security Services Acquisition Sub Corp. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[25]   11,089   11,089    
Fair value at the ending [4],[21],[26] 12,520     12,520    
Investment, Identifier [Axis]: Security Services Acquisition Sub Corp. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[25]   10,954   10,954    
Fair value at the ending [4],[21],[26] 12,368     12,368    
Investment, Identifier [Axis]: Securly, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   969   969    
Fair value at the ending [4] 1,599     1,599    
Investment, Identifier [Axis]: Securly, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   3,702   3,702    
Fair value at the ending [4],[33] 3,665     3,665    
Investment, Identifier [Axis]: Securly, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   8,400   8,400    
Fair value at the ending [4],[33] 8,316     8,316    
Investment, Identifier [Axis]: Securly, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   1,938   1,938    
Fair value at the ending [4],[33] 1,919     1,919    
Investment, Identifier [Axis]: Securly, Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10]   2,488   2,488    
Fair value at the ending [4],[28] 2,463     2,463    
Investment, Identifier [Axis]: Securly, Inc. 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10]   457   457    
Fair value at the ending [4],[26],[28] 452     452    
Investment, Identifier [Axis]: Seran BioScience, LLC (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   433   433    
Fair value at the ending [4] $ 466     $ 466    
Number of shares held 31,237     31,237   27,565
Investment, Identifier [Axis]: Seran BioScience, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: Seran BioScience, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   1,886   1,886    
Fair value at the ending [4],[23],[33] 4,237     4,237    
Investment, Identifier [Axis]: Seran BioScience, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[20]   225   225    
Fair value at the ending [4],[21],[23],[32] 507     507    
Investment, Identifier [Axis]: Seran BioScience, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   427   427    
Fair value at the ending [4],[23] 964     964    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Class A preferred interests)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   4,747   4,747    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       273    
Fair value at the ending $ 5,020     $ 5,020    
Number of shares held 3,042,264     3,042,264    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Class A preferred interests) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[17]   4,747   $ 4,747    
Fair value at the ending [4],[6],[18] $ 5,020     $ 5,020    
Number of shares held 3,042,264 [18]     3,042,264 [18]   3,042,264 [5],[17]
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Class B preferred interests)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   7,320   $ 7,320    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       422    
Fair value at the ending $ 7,742     $ 7,742    
Number of shares held 4,692,038     4,692,038    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Class B preferred interests) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[17]   7,320   $ 7,320    
Fair value at the ending [4],[6],[18] $ 7,742     $ 7,742    
Number of shares held 4,692,038 [18]     4,692,038 [18]   4,692,038 [5],[17]
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Preferred interests)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0 11,989  
Transfers in (out)       0 0  
Purchases (cost)       0 1,879  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 (1,267)  
Fair value at the ending $ 0   $ 12,601 $ 0 $ 12,601  
Number of shares held 9,191,624   14,113,182 9,191,624 14,113,182  
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Preferred interests) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[17]   0   $ 0    
Fair value at the ending [4],[6],[18] $ 0     $ 0    
Number of shares held 9,191,624 [18]     9,191,624 [18]   9,191,624 [5],[17]
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   763   $ 763 $ 998  
Transfers in (out)       0 0  
Purchases (cost)       439 0  
Sales and paydowns (cost)       (1,205) (1,017)  
PIK interest capitalized (cost)       3 19  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending $ 0   $ 0 0 0  
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11]   763   763    
Fair value at the ending [4],[6],[14] 0     0    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC 1            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   5,687   5,687 5,261  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       (26) (25)  
PIK interest capitalized (cost)       347 133  
Discount accretion       13 11  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (12) (11)  
Fair value at the ending 6,009   5,369 6,009 5,369  
Investment, Identifier [Axis]: SheerTrans Solutions, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   5,687   5,687    
Fair value at the ending [4],[6] 6,009     6,009    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC 2            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   1,624   1,624 1,503  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       (7) (8)  
PIK interest capitalized (cost)       99 38  
Discount accretion       3 3  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (3) (2)  
Fair value at the ending 1,716   1,534 1,716 1,534  
Investment, Identifier [Axis]: SheerTrans Solutions, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   1,624   1,624    
Fair value at the ending [4],[6] 1,716     1,716    
Investment, Identifier [Axis]: Signal 88, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[25],[27]   23,206   23,206    
Fair value at the ending [4],[23],[26],[29] 23,089     23,089    
Investment, Identifier [Axis]: Signiant Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Signiant Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[27]   14,963   14,963    
Fair value at the ending [4],[23] 2,951     2,951    
Investment, Identifier [Axis]: Signiant Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   3,000   3,000    
Fair value at the ending [4],[21],[29] 14,720     14,720    
Investment, Identifier [Axis]: SingleStore, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 3,432     3,432    
Investment, Identifier [Axis]: SingleStore, Inc. (Equity commitment) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   9,359   9,359    
Fair value at the ending [4] 9,546     9,546    
Total equity investment 9,359     9,359   $ 9,359
Investment, Identifier [Axis]: SingleStore, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: SingleStore, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   72,270   72,270    
Fair value at the ending [4],[26],[32] 73,000     73,000    
Investment, Identifier [Axis]: Skillsoft Corp. (Class A shares) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[25],[72]   12   12    
Fair value at the ending [4],[16],[73] $ 6     $ 6    
Number of shares held 1,308 [16],[73]     1,308 [16],[73]   1,308 [13],[25],[72]
Investment, Identifier [Axis]: SonicWall US Holdings Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[61]   10,422   $ 10,422    
Investment, Identifier [Axis]: Sparq Holdings, Inc. (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   69   69    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 900,000     900,000   600,000
Investment, Identifier [Axis]: Sparq Holdings, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   213   $ 213    
Fair value at the ending [4],[14] $ 307     307    
Investment, Identifier [Axis]: Sparq Holdings, Inc. (Series A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   167   167    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 125,581     125,581   83,720
Investment, Identifier [Axis]: Sparq Holdings, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   1,819   $ 1,819    
Fair value at the ending [4],[33] $ 2,706     2,706    
Investment, Identifier [Axis]: Sparq Holdings, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   398   398    
Fair value at the ending [4] 593     593    
Investment, Identifier [Axis]: Sparq Holdings, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   407   407    
Fair value at the ending [4] 606     606    
Investment, Identifier [Axis]: Spherix Global Inc. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 415     415   333
Investment, Identifier [Axis]: Spherix Global Inc. (Class A-2 units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   71   $ 71    
Fair value at the ending [4] $ 84     $ 84    
Number of shares held 64     64   52
Investment, Identifier [Axis]: Spherix Global Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   248   $ 248    
Investment, Identifier [Axis]: Spherix Global Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   3,100   3,100    
Investment, Identifier [Axis]: Sports Operating Holdings II, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   231   231    
Investment, Identifier [Axis]: Sports Operating Holdings II, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   4,832   4,832    
Investment, Identifier [Axis]: Sports Operating Holdings II, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   3,940   3,940    
Investment, Identifier [Axis]: StarCompliance MidCo, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,651   1,651    
Fair value at the ending [4],[14] $ 2,233     2,233    
Investment, Identifier [Axis]: StarCompliance MidCo, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[22]   441   441    
Fair value at the ending [4],[21],[24],[28] 697     697    
Investment, Identifier [Axis]: StarCompliance MidCo, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19],[22],[27]   27,375   27,375    
Fair value at the ending [4],[21],[24],[28],[29],[33] 29,375     29,375    
Investment, Identifier [Axis]: StarCompliance MidCo, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19],[27]   4,253   4,253    
Fair value at the ending [4],[21],[29],[33] 4,589     4,589    
Investment, Identifier [Axis]: StarCompliance MidCo, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[27]   2,509   2,509    
Fair value at the ending [4],[21],[29] 2,711     2,711    
Investment, Identifier [Axis]: Steel City Wash, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Steel City Wash, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   335   335    
Fair value at the ending [4],[14] 523     523    
Investment, Identifier [Axis]: Steel City Wash, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   13,846   13,846    
Fair value at the ending [4],[24] 13,770     13,770    
Investment, Identifier [Axis]: StormTrap, LLC (Class A common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   589   589    
Fair value at the ending [4],[18] $ 522     $ 522    
Number of shares held 640,000 [18]     640,000 [18]   640,000 [17]
Investment, Identifier [Axis]: StormTrap, LLC (Class A preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   640   $ 640    
Fair value at the ending [4],[18] $ 640     $ 640    
Number of shares held 640,000 [18]     640,000 [18]   640,000 [17]
Investment, Identifier [Axis]: Streamland Media MidCo LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[36]   72   $ 72    
Fair value at the ending [4],[14],[15],[34] $ 170     170    
Investment, Identifier [Axis]: Streamland Media MidCo LLC (Revolver) | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   128   128    
Fair value at the ending [4],[34] 129     129    
Investment, Identifier [Axis]: Streamland Media MidCo LLC (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4],[18] $ 379     $ 379    
Number of shares held 8,812 [18]     8,812 [18]   8,812
Investment, Identifier [Axis]: Streamland Media MidCo LLC 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   887   $ 887    
Fair value at the ending [4],[34] $ 902     902    
Investment, Identifier [Axis]: Streamland Media MidCo LLC 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   627   627    
Fair value at the ending [4],[34] 345     345    
Investment, Identifier [Axis]: Summit Professional Education, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning         10,244  
Transfers in (out)         0  
Purchases (cost)         0  
Sales and paydowns (cost)         (51)  
PIK interest capitalized (cost)         0  
Discount accretion         20  
Net realized gain (loss)         0  
Net change in unrealized gain (loss)         4  
Fair value at the ending     10,217   10,217  
Investment, Identifier [Axis]: Summit Professional Education, LLC (Class A units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   18,138   18,138 16,676  
Transfers in (out)       0 0  
Purchases (cost)       0 2,105  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       1,854 0  
Fair value at the ending $ 19,992   $ 18,781 $ 19,992 $ 18,781  
Number of shares held 19,762   18,781 19,762 18,781  
Investment, Identifier [Axis]: Summit Professional Education, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[17]   18,138   $ 18,138    
Fair value at the ending [4],[6],[18] $ 19,992     $ 19,992    
Number of shares held 19,762 [18]     19,762 [18]   19,762 [5],[17]
Investment, Identifier [Axis]: Summit Professional Education, LLC (Delayed Draw)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0    
Transfers in (out)       0    
Purchases (cost)       589    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       3    
Fair value at the ending $ 592     592    
Investment, Identifier [Axis]: Summit Professional Education, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11],[12]   0   0    
Fair value at the ending [4],[6],[14],[15] 592     592    
Investment, Identifier [Axis]: Summit Professional Education, LLC (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0 $ 1,145  
Transfers in (out)       0 0  
Purchases (cost)       638 490  
Sales and paydowns (cost)       0 (1,145)  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending 638   $ 490 638 490  
Investment, Identifier [Axis]: Summit Professional Education, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11]   0   0    
Fair value at the ending [4],[6],[14] 638     638    
Investment, Identifier [Axis]: Summit Professional Education, LLC 1            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   9,994   9,994    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       (50)    
PIK interest capitalized (cost)       0    
Discount accretion       22    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       128    
Fair value at the ending 10,094     10,094    
Investment, Identifier [Axis]: Summit Professional Education, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[20]   9,994   9,994    
Fair value at the ending [4],[6],[21] 10,094     10,094    
Investment, Identifier [Axis]: Summit Professional Education, LLC 2            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   3,960   3,960    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       (20)    
PIK interest capitalized (cost)       0    
Discount accretion       10    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       74    
Fair value at the ending 4,024     4,024    
Investment, Identifier [Axis]: Summit Professional Education, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   3,960   3,960    
Fair value at the ending [4],[6] 4,024     4,024    
Investment, Identifier [Axis]: Summit Restoration Group, LLC (fka Water Buyer, LLC) (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Summit Restoration Group, LLC (fka Water Buyer, LLC) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[32] 9,781     9,781    
Investment, Identifier [Axis]: Summit Restoration Group, LLC (fka Water Buyer, LLC) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23] 5,958     5,958    
Investment, Identifier [Axis]: Sundy Village West Mezz Borrower, LLC (Delayed Draw) | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13]   33,990   33,990    
Investment, Identifier [Axis]: Sundy Village West Mezz Borrower, LLC 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16] 37,798     37,798    
Investment, Identifier [Axis]: Sundy Village West Mezz Borrower, LLC 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16] 16,068     16,068    
Investment, Identifier [Axis]: Sundy Village West Mezz Borrower, LLC | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   14,877   14,877    
Investment, Identifier [Axis]: Sunstates Security, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   6,717   6,717    
Fair value at the ending [4],[14],[15],[26] 11,052     11,052    
Investment, Identifier [Axis]: Sunstates Security, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   20,099   20,099    
Fair value at the ending [4],[23] 19,784     19,784    
Investment, Identifier [Axis]: Symplr Software, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[61]   0   0    
Investment, Identifier [Axis]: Syniverse Holdings, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   11,498   11,498    
Fair value at the ending [4],[16] 10,301     10,301    
Investment, Identifier [Axis]: TCFIII OWL Buyer LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   4,298   4,298    
Investment, Identifier [Axis]: TCFIII OWL Buyer LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   5,248   5,248    
Investment, Identifier [Axis]: TCFIII OWL Buyer LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   4,710   4,710    
Investment, Identifier [Axis]: TEAM Public Choices, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   4,421   4,421    
Investment, Identifier [Axis]: TEAM Public Choices, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   1,468   1,468    
Investment, Identifier [Axis]: TIC Bidco Limited | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[30],[43]   17,534   17,534    
Investment, Identifier [Axis]: TJ Management HoldCo LLC (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       127    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       0    
Fair value at the ending 127     127    
Investment, Identifier [Axis]: TJ Management HoldCo LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[14] 127     127    
Investment, Identifier [Axis]: TJ Management HoldCo LLC (Shares of common stock)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0    
Transfers in (out)       0    
Purchases (cost)       2,813    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (337)    
Fair value at the ending $ 2,476     $ 2,476    
Number of shares held 16     16    
Investment, Identifier [Axis]: TJ Management HoldCo LLC (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[6],[18] $ 2,476     $ 2,476    
Number of shares held [18] 16     16    
Investment, Identifier [Axis]: Talent Systems, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] $ 0     $ 0    
Investment, Identifier [Axis]: Talent Systems, LLC (fka Moonraker Acquisitionco LLC) (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Investment, Identifier [Axis]: Talent Systems, LLC (fka Moonraker Acquisitionco LLC) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   6,668   6,668    
Investment, Identifier [Axis]: Talent Systems, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 6,528     6,528    
Investment, Identifier [Axis]: Talos Energy Inc. (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[25],[72]   133   133    
Fair value at the ending [4],[16],[26],[73] $ 157     $ 157    
Number of shares held 12,138 [16],[26],[73]     12,138 [16],[26],[73]   12,138 [13],[25],[72]
Investment, Identifier [Axis]: Tavoron Buyer Corp. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   1,070   $ 1,070    
Fair value at the ending [4],[14],[15] $ 3,417     3,417    
Investment, Identifier [Axis]: Tavoron Buyer Corp. (Revolver) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13],[35]   0   0    
Fair value at the ending [4],[14],[16],[37] 0     0    
Investment, Identifier [Axis]: Tavoron Buyer Corp. (Revolver) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 107     107    
Investment, Identifier [Axis]: Tavoron Buyer Corp. (Units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,460   2,460    
Fair value at the ending [4] $ 2,930     $ 2,930    
Number of shares held 2,609,734     2,609,734   2,417,450
Investment, Identifier [Axis]: Tavoron Buyer Corp. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   7,600   $ 7,600    
Fair value at the ending [4],[24] $ 7,543     7,543    
Investment, Identifier [Axis]: Tax Protection BuyCo, LLC (Common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   1,169   1,169    
Fair value at the ending [4],[18] $ 1,272     $ 1,272    
Number of shares held 1,159 [18]     1,159 [18]   1,159 [17]
Investment, Identifier [Axis]: Tax Protection BuyCo, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   $ 0    
Fair value at the ending [4],[14],[15] $ 0     0    
Investment, Identifier [Axis]: Tax Protection BuyCo, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Tax Protection BuyCo, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[22],[27]   23,892   23,892    
Fair value at the ending [4],[23],[24],[29],[32] 23,760     23,760    
Investment, Identifier [Axis]: Tegra118 Wealth Solutions, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   1,751   1,751    
Fair value at the ending [4],[16],[23] 4,017     4,017    
Investment, Identifier [Axis]: The Black Tux, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   796   796    
Investment, Identifier [Axis]: The Black Tux, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 778     778    
Investment, Identifier [Axis]: The Black Tux, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23],[28],[32] 9,320     9,320    
Investment, Identifier [Axis]: The Black Tux, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 792     792    
Investment, Identifier [Axis]: The Black Tux, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10]   9,368   9,368    
Investment, Identifier [Axis]: The Gersh Agency, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 2,775     2,775    
Investment, Identifier [Axis]: The Gersh Agency, LLC (Revolver) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13],[41]   1,404   1,404    
Fair value at the ending [4],[14],[16],[42] 1,713     1,713    
Investment, Identifier [Axis]: The Gersh Agency, LLC (Revolver) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   3,220   3,220    
Fair value at the ending [4],[14] 3,243     3,243    
Investment, Identifier [Axis]: The Gersh Agency, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[41]   6,176   6,176    
Fair value at the ending [4],[16],[42] 6,288     6,288    
Investment, Identifier [Axis]: The Gersh Agency, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[41]   18,900   18,900    
Fair value at the ending [4],[16],[42] 19,242     19,242    
Investment, Identifier [Axis]: The Gersh Agency, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   6,082   6,082    
Fair value at the ending [4],[21] 6,370     6,370    
Investment, Identifier [Axis]: The Gersh Agency, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   12,876   12,876    
Fair value at the ending [4],[21] 13,486     13,486    
Investment, Identifier [Axis]: The Hertz Corporation 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   6,908   6,908    
Investment, Identifier [Axis]: The Hertz Corporation 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   1,363   1,363    
Investment, Identifier [Axis]: The Kyjen Company, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[36]   0   0    
Fair value at the ending [4],[14],[34] 0     0    
Investment, Identifier [Axis]: The Kyjen Company, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19],[25],[34]   2,153   2,153    
Fair value at the ending [4],[26],[33],[34] 2,224     2,224    
Investment, Identifier [Axis]: The Kyjen Company, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   5   5    
Fair value at the ending [4],[34] 3     3    
Investment, Identifier [Axis]: The Smilist DSO, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   9,733   9,733    
Fair value at the ending [4],[14],[15] 10,444     10,444    
Investment, Identifier [Axis]: The Smilist DSO, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 1,290     1,290    
Investment, Identifier [Axis]: The Smilist DSO, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[20]   28,522   28,522    
Fair value at the ending [4],[21],[23],[32] 28,222     28,222    
Investment, Identifier [Axis]: The Smilist DSO, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[27]   7,711   7,711    
Fair value at the ending [4],[29],[32] 7,630     7,630    
Investment, Identifier [Axis]: The Smilist DSO, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   6,193   6,193    
Fair value at the ending [4],[23] 6,128     6,128    
Investment, Identifier [Axis]: Thrasio, LLC (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 47,646     47,646   31,764
Investment, Identifier [Axis]: Thrasio, LLC (Units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   $ 0    
Number of shares held           2,162,506
Investment, Identifier [Axis]: Thrasio, LLC | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   1,477   1,477    
Fair value at the ending [4],[34] $ 751     751    
Investment, Identifier [Axis]: Thrasio, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   574   574    
Investment, Identifier [Axis]: TigerConnect, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: TigerConnect, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   10,002   10,002    
Fair value at the ending [4],[26],[33] 13,003     13,003    
Investment, Identifier [Axis]: TigerConnect, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   571   571    
Fair value at the ending [4],[26] 743     743    
Investment, Identifier [Axis]: TigerConnect, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[27]   3,038   3,038    
Fair value at the ending [4],[26],[29] 3,949     3,949    
Investment, Identifier [Axis]: TigerConnect, Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   52   52    
Fair value at the ending [4] 68     68    
Investment, Identifier [Axis]: TigerConnect, Inc. 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,253   1,253    
Fair value at the ending [4] 1,628     1,628    
Investment, Identifier [Axis]: Tiugo Group Holdings Corp (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Tiugo Group Holdings Corp (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Tiugo Group Holdings Corp | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[20],[22],[27]   66,222   66,222    
Fair value at the ending [4],[21],[24],[29],[32] 73,592     73,592    
Investment, Identifier [Axis]: Together Women's Health, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   1,148   1,148    
Fair value at the ending [4],[14],[15] 1,130     1,130    
Investment, Identifier [Axis]: Together Women's Health, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Together Women's Health, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   8,975   8,975    
Fair value at the ending [4],[23] 8,833     8,833    
Investment, Identifier [Axis]: Touchmath Acquisition LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Investment, Identifier [Axis]: Touchmath Acquisition LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   9,178   9,178    
Investment, Identifier [Axis]: Touchtunes Music Group, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   4,626   4,626    
Fair value at the ending [4] 4,323     4,323    
Investment, Identifier [Axis]: Transnetwork LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20],[22],[27]   14,784   14,784    
Fair value at the ending [4],[21],[24],[29] 13,644     13,644    
Investment, Identifier [Axis]: Triad Financial Services, Inc. (Equity commitment funded)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   6,902   6,902 4,803  
Transfers in (out)       0 0  
Purchases (cost)       0 1,521  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 16  
Fair value at the ending 6,902   6,340 6,902 6,340  
Amount of total commitment       6,902 6,324  
Total equity investment 41,855   41,855 41,855 41,855  
Investment, Identifier [Axis]: Triad Financial Services, Inc. (Equity commitment funded) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[13],[74]   6,902   6,902    
Fair value at the ending [4],[6],[16],[75] 6,902     6,902    
Amount of total commitment   6,902 [5],[13],[74]   6,902 [16],[75]    
Total equity investment 41,855 [16],[75]     41,855 [16],[75]   $ 41,855 [5],[13],[74]
Investment, Identifier [Axis]: Trident Maritime Systems, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 134     134    
Investment, Identifier [Axis]: Trident Maritime Systems, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 1,237     1,237    
Investment, Identifier [Axis]: Trilon Group, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   2,853   2,853    
Investment, Identifier [Axis]: Trilon Group, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Investment, Identifier [Axis]: Trilon Group, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[9],[10],[19],[27]   11,599   11,599    
Investment, Identifier [Axis]: Trilon Group, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   3,563   3,563    
Investment, Identifier [Axis]: Trilon Group, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[27]   12,016   12,016    
Investment, Identifier [Axis]: Trilon Group, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   365   365    
Investment, Identifier [Axis]: Trilon Group, LLC 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[22]   10,137   10,137    
Investment, Identifier [Axis]: USLIVE OPCO, INC. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: USLIVE OPCO, INC. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   10,005   10,005    
Fair value at the ending [4],[26] 9,885     9,885    
Investment, Identifier [Axis]: Ultra Clean Holdco LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   3,686   3,686    
Fair value at the ending [4],[14],[15] 3,672     3,672    
Investment, Identifier [Axis]: Ultra Clean Holdco LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Ultra Clean Holdco LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9],[20]   20,551   20,551    
Fair value at the ending [4],[21],[32] 20,467     20,467    
Investment, Identifier [Axis]: Unanet, Inc. (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   4,956   4,956    
Fair value at the ending [4],[14],[15] 4,956     4,956    
Investment, Identifier [Axis]: Unanet, Inc. (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Unanet, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Unanet, Inc. (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,918   2,918    
Fair value at the ending [4] $ 2,772     $ 2,772    
Number of shares held 1,621,053     1,621,053   1,621,053
Investment, Identifier [Axis]: Unanet, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19]   22,000   $ 22,000    
Fair value at the ending [4],[28],[33] $ 22,000     22,000    
Investment, Identifier [Axis]: V10 Entertainment, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] 73     73    
Investment, Identifier [Axis]: V10 Entertainment, Inc. (Shares of common units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] $ 109     $ 109    
Number of shares held 392,157     392,157    
Investment, Identifier [Axis]: V10 Entertainment, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] $ 3,194     $ 3,194    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   4,176   4,176    
Fair value at the ending [4],[14],[15] 4,651     4,651    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   1,123   1,123    
Fair value at the ending [4],[14] 1,011     1,011    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25],[27]   17,886   17,886    
Fair value at the ending [4],[26],[29] 17,831     17,831    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   2,082   2,082    
Fair value at the ending [4],[21] 2,075     2,075    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   7,451   7,451    
Fair value at the ending [4],[24] 7,428     7,428    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   3,337   3,337    
Fair value at the ending [4],[24] 3,327     3,327    
Investment, Identifier [Axis]: Valudor Products LLC (Class A-1 units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[18] $ 0     $ 0    
Number of shares held [18] 501,014     501,014    
Investment, Identifier [Axis]: Valudor Products LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14] $ 381     $ 381    
Investment, Identifier [Axis]: Valudor Products LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 2,065     2,065    
Investment, Identifier [Axis]: Valudor Products LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[76] 388     388    
Investment, Identifier [Axis]: Valudor Products LLC 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 860     860    
Investment, Identifier [Axis]: Vanterra Holdings, LLC (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: Vanterra Holdings, LLC (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: Vanterra Holdings, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[14],[15] 14,098     14,098    
Investment, Identifier [Axis]: Vanterra Holdings, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Vanterra Holdings, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] 10,458     10,458    
Investment, Identifier [Axis]: Vanterra Holdings, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[23],[26] 20,917     20,917    
Investment, Identifier [Axis]: Vanterra Holdings, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   10,500   10,500    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation (Delayed Draw) 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13],[45]   0   0    
Fair value at the ending [4],[14],[15],[16],[46] 0     0    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation (Delayed Draw) 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13],[45]   0   0    
Fair value at the ending [4],[14],[15],[16],[46] 0     0    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13],[45]   0   0    
Fair value at the ending [4],[14],[16],[46] 0     0    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[45]   12,328   12,328    
Fair value at the ending [4],[16],[46] 13,625     13,625    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[45]   29,057   29,057    
Fair value at the ending [4],[16],[26],[46] 29,108     29,108    
Investment, Identifier [Axis]: Velociti, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 1,263     1,263    
Investment, Identifier [Axis]: Velociti, LLC (Units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[17]   6,137   6,137    
Fair value at the ending [4],[18] $ 6,076     $ 6,076    
Number of shares held 6,075,951 [18]     6,075,951 [18]   6,075,951 [17]
Investment, Identifier [Axis]: Velociti, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[20]   11,940   $ 11,940    
Fair value at the ending [4],[21],[28] $ 11,880     11,880    
Investment, Identifier [Axis]: Velociti, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   4,295   4,295    
Fair value at the ending [4],[23] 4,273     4,273    
Investment, Identifier [Axis]: Veritas Buyer, LLC and DecisionHR Holdings, Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Veritas Buyer, LLC and DecisionHR Holdings, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Veritas Buyer, LLC and DecisionHR Holdings, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   19,404   19,404    
Fair value at the ending [4],[24] 19,475     19,475    
Investment, Identifier [Axis]: Vero Biotech Inc. (Warrant to purchase the equity) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   102   102    
Fair value at the ending [4] 116     116    
Investment, Identifier [Axis]: Vero Biotech Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   29,604   29,604    
Investment, Identifier [Axis]: Vhagar Purchaser, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Fair value at the ending [4],[14],[15] 0     0    
Investment, Identifier [Axis]: Vhagar Purchaser, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: Vhagar Purchaser, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[25],[27]   29,370   29,370    
Fair value at the ending [4],[26],[28],[29] 29,333     29,333    
Investment, Identifier [Axis]: Vhagar Purchaser, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25],[27]   13,350   13,350    
Fair value at the ending [4],[26],[29] 13,333     13,333    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   0   0    
Fair value at the ending [4] $ 0     $ 0    
Number of shares held 2,590,000     2,590,000   1,110,000
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36],[38]   0   $ 0    
Fair value at the ending [4],[34],[39] $ 0     0    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36],[38]   0   0    
Fair value at the ending [4],[34],[39] 0     0    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 3 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36],[38]   0   0    
Fair value at the ending [4],[34],[39] 0     0    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 4 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36],[38]   0   0    
Fair value at the ending [4],[34],[39] 0     0    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 5 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   38   38    
Fair value at the ending [4],[34] 34     34    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 6 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   11   11    
Fair value at the ending [4],[34] 10     10    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 7 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   20   20    
Fair value at the ending [4],[34] 18     18    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 8 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   0   0    
Fair value at the ending [4],[34] 0     0    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[36]   454   454    
Fair value at the ending [4],[34] 1,111     1,111    
Investment, Identifier [Axis]: Volt Bidco, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Investment, Identifier [Axis]: Volt Bidco, Inc. (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   776   776    
Fair value at the ending [4] $ 314     $ 314    
Number of shares held 878     878   878
Investment, Identifier [Axis]: Volt Bidco, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   9,809   $ 9,809    
Investment, Identifier [Axis]: Volt Bidco, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[20]   1,844   1,844    
Investment, Identifier [Axis]: Volt Bidco, Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   765   765    
Investment, Identifier [Axis]: Volt Bidco, Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[22]   1,060   1,060    
Investment, Identifier [Axis]: WPEngine, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: WPEngine, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[10],[19]   16,500   16,500    
Fair value at the ending [4],[28],[33] 16,459     16,459    
Investment, Identifier [Axis]: Watchguard Technologies, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25],[27]   20,479   20,479    
Fair value at the ending [4],[29] 5,085     5,085    
Investment, Identifier [Axis]: Water Buyer, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   0   0    
Investment, Identifier [Axis]: Water Buyer, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   400   400    
Investment, Identifier [Axis]: Water Buyer, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[9]   9,890   9,890    
Investment, Identifier [Axis]: WebPT, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   433   433    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: WebPT, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   4,750   4,750    
Fair value at the ending [4],[33] 4,521     4,521    
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc.            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   15,572   15,572 22,772  
Transfers in (out)       0 0  
Purchases (cost)       3,179 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       1,723 776  
Discount accretion       31 46  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (4,519) (6,518)  
Fair value at the ending 15,986   17,076 15,986 17,076  
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Delayed Draw)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning         1,980  
Transfers in (out)         0  
Purchases (cost)         840  
Sales and paydowns (cost)         0  
PIK interest capitalized (cost)         68  
Discount accretion         0  
Net realized gain (loss)         0  
Net change in unrealized gain (loss)         0  
Fair value at the ending     2,888   2,888  
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   3,487   3,487 1,539  
Transfers in (out)       0 0  
Purchases (cost)       1,573 446  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       216 45  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending 5,276   2,030 5,276 2,030  
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11]   3,487   3,487    
Fair value at the ending [4],[6] 5,276     5,276    
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Series A preferred stock)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0 0  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending $ 0   $ 0 $ 0 $ 0  
Number of shares held 630,178   518,970 630,178 518,970  
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Series A preferred stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   0   $ 0    
Fair value at the ending [4],[6] $ 0     $ 0    
Number of shares held 630,178     630,178   518,970 [5]
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Series B preferred stock)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   $ 0 $ 0  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending $ 0   $ 0 $ 0 $ 0  
Number of shares held 140,958   116,083 140,958 116,083  
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Series B preferred stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   0   $ 0    
Fair value at the ending [4],[6] $ 0     $ 0    
Number of shares held 140,958     140,958   116,083 [5]
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. 1            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   3,197   $ 3,197    
Transfers in (out)       0    
Purchases (cost)       708    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       193    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       (5)    
Fair value at the ending $ 4,093     4,093    
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   15,572   15,572    
Fair value at the ending [4],[6] 15,986     15,986    
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   3,197   3,197    
Fair value at the ending [4],[6] 4,093     4,093    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC (Preferred units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[17]   6,421   6,421    
Fair value at the ending [4],[16],[18] $ 11,945     $ 11,945    
Number of shares held 5,133 [16],[18]     5,133 [16],[18]   2,992 [13],[17]
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 1 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   928   $ 928    
Fair value at the ending [4],[16] $ 1,683     1,683    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 2 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   1,767   1,767    
Fair value at the ending [4],[16] 3,239     3,239    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 3 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   519   519    
Fair value at the ending [4],[16] 952     952    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 4 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   11,465   11,465    
Fair value at the ending [4],[16] 21,011     21,011    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 5 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   1,983   1,983    
Fair value at the ending [4],[16] 3,635     3,635    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 6 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   3,559   3,559    
Fair value at the ending [4],[16] 6,521     6,521    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 7 | Junior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13]   2,440   2,440    
Fair value at the ending [4],[16] 4,470     4,470    
Investment, Identifier [Axis]: XanEdu Publishing, Inc. (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   127   127    
Fair value at the ending [4] $ 172     $ 172    
Number of shares held 114,583     114,583   65,104
Investment, Identifier [Axis]: XanEdu Publishing, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   $ 0    
Fair value at the ending [4],[14] $ 0     0    
Investment, Identifier [Axis]: XanEdu Publishing, Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8],[19]   5,522   5,522    
Fair value at the ending [4],[23],[33] 8,046     8,046    
Investment, Identifier [Axis]: XanEdu Publishing, Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[8]   2,195   2,195    
Fair value at the ending [4],[23] 3,198     3,198    
Investment, Identifier [Axis]: Xpress Wellness, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12]   3,867   3,867    
Investment, Identifier [Axis]: Xpress Wellness, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   7,015   7,015    
Fair value at the ending [4],[14] 7,015     7,015    
Investment, Identifier [Axis]: Xpress Wellness, LLC (Series A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   14,312   14,312    
Fair value at the ending [4] $ 20,119     $ 20,119    
Number of shares held 18,310     18,310   18,310
Investment, Identifier [Axis]: Xpress Wellness, LLC (Series C units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   1,040   $ 1,040    
Fair value at the ending [4] $ 1,228     $ 1,228    
Number of shares held 886     886   816
Investment, Identifier [Axis]: Xpress Wellness, LLC 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[26] $ 39,498     $ 39,498    
Investment, Identifier [Axis]: Xpress Wellness, LLC 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4] 3,918     3,918    
Investment, Identifier [Axis]: Xpress Wellness, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25]   38,985   38,985    
Investment, Identifier [Axis]: YBR OZ ECE, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   1,994   1,994 $ 0  
Transfers in (out)       0 0  
Purchases (cost)       0 1,961  
Sales and paydowns (cost)       (10) 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       4 3  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (5) 38  
Fair value at the ending 1,983   $ 2,002 1,983 2,002  
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Class A units)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   6,875   6,875 0  
Transfers in (out)       0 0  
Purchases (cost)       0 6,875  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending $ 6,875   $ 6,875 $ 6,875 $ 6,875  
Number of shares held 6,875   6,875 6,875 6,875  
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Class A units) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   6,875   $ 6,875    
Fair value at the ending [4],[6] $ 6,875     $ 6,875    
Number of shares held 6,875     6,875   6,875 [5]
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Delayed Draw)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   901   $ 901 $ 0  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       (5) 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending $ 896   $ 0 896 0  
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11],[12]   901   901    
Fair value at the ending [4],[6],[14],[15] 896     896    
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   0   0 0  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       0 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending 0   0 0 0  
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11]   0   0    
Fair value at the ending [4],[6],[14] 0     0    
Investment, Identifier [Axis]: YBR OZ ECE, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[8]   1,994   1,994    
Fair value at the ending [4],[6],[23] 1,983     1,983    
Investment, Identifier [Axis]: ZI Intermediate II, Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11]   0   0    
Fair value at the ending [4],[14] 0     0    
Investment, Identifier [Axis]: ZI Intermediate II, Inc. (Shares of common stock) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2]   4,088   4,088    
Fair value at the ending [4] $ 4,156     $ 4,156    
Number of shares held 3,790     3,790   3,790
Investment, Identifier [Axis]: ZI Intermediate II, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[25],[27]   82,291   $ 82,291    
Fair value at the ending [4],[21],[24],[26],[29] $ 82,456     82,456    
Investment, Identifier [Axis]: Zodega Landscaping, LLC            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   12,281   12,281 12,431  
Transfers in (out)       0 0  
Purchases (cost)       0 0  
Sales and paydowns (cost)       (61) (60)  
PIK interest capitalized (cost)       0 0  
Discount accretion       57 51  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       (89) (11)  
Fair value at the ending $ 12,188   12,411 $ 12,188 12,411  
Investment, Identifier [Axis]: Zodega Landscaping, LLC ( preferred interests)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Number of units held 146,757     146,757    
Investment, Identifier [Axis]: Zodega Landscaping, LLC (Preferred interestes)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning         15,130  
Transfers in (out)         0  
Purchases (cost)         0  
Sales and paydowns (cost)         0  
PIK interest capitalized (cost)         0  
Discount accretion         0  
Net realized gain (loss)         0  
Net change in unrealized gain (loss)         2,218  
Fair value at the ending     $ 17,348   $ 17,348  
Number of units held     146,757   146,757  
Investment, Identifier [Axis]: Zodega Landscaping, LLC (Preferred interests) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[77]   18,148   $ 18,148    
Fair value at the ending [4],[6],[78] $ 19,561     $ 19,561    
Number of shares held 146,757 [78]     146,757 [78]   146,757 [5],[77]
Investment, Identifier [Axis]: Zodega Landscaping, LLC (Revolver)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   992   $ 992 $ 992  
Transfers in (out)       0 0  
Purchases (cost)       496 0  
Sales and paydowns (cost)       (595) 0  
PIK interest capitalized (cost)       0 0  
Discount accretion       0 0  
Net realized gain (loss)       0 0  
Net change in unrealized gain (loss)       0 0  
Fair value at the ending $ 893   $ 992 893 $ 992  
Investment, Identifier [Axis]: Zodega Landscaping, LLC (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5],[11]   992   992    
Fair value at the ending [4],[6],[14] 893     893    
Investment, Identifier [Axis]: Zodega Landscaping, LLC (preferred interests)            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning   18,148   18,148    
Transfers in (out)       0    
Purchases (cost)       0    
Sales and paydowns (cost)       0    
PIK interest capitalized (cost)       0    
Discount accretion       0    
Net realized gain (loss)       0    
Net change in unrealized gain (loss)       1,413    
Fair value at the ending 19,561     19,561    
Investment, Identifier [Axis]: Zodega Landscaping, LLC | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[5]   12,281   12,281    
Fair value at the ending [4],[6],[33] 12,188     12,188    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. (Class B preferred shares) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[45]   217   217    
Fair value at the ending [4],[16],[46] $ 130     $ 130    
Number of shares held 96,603 [16],[46]     96,603 [16],[46]   96,603 [13],[45]
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. (Class C preferred shares) | Equity Securities            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[45]   51   $ 51    
Fair value at the ending [4],[16],[46] $ 44     $ 44    
Number of shares held 18,328 [16],[46]     18,328 [16],[46]   18,328 [13],[45]
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. (Delayed Draw) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[12],[13],[45]   1,644   $ 1,644    
Fair value at the ending [4],[14],[15],[16],[46] $ 541     541    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. (Revolver) | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[11],[13],[45]   0   0    
Fair value at the ending [4],[14],[16],[46] 0     0    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. 1 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[19],[45]   13,508   13,508    
Fair value at the ending [4],[16],[33],[46] 13,508     13,508    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. 2 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[19],[45]   1,050   1,050    
Fair value at the ending [4],[16],[33],[46] 1,050     1,050    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. 3 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[45]   2,211   2,211    
Fair value at the ending [4],[16],[46] 2,211     2,211    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. 4 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[13],[45]   1,679   1,679    
Fair value at the ending [4],[16],[46] 1,679     1,679    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. 5 | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the ending [4],[16],[46] 1,912     1,912    
Investment, Identifier [Axis]: iCIMS, Inc. | Senior Secured Loans            
Transactions with Affiliated Companies, Fair value Roll Forward            
Fair value at the beginning [2],[19]   $ 7,820   7,820    
Fair value at the ending [4],[33] $ 10,159     $ 10,159    
[1] All of the Company’s investments are issued by eligible portfolio companies, as defined in the Investment Company Act of 1940, as amended (the “1940 Act”), unless otherwise noted. All of the Company’s investments are issued by U.S. portfolio companies unless otherwise noted.
[2] Except as otherwise noted, because there is no readily available market value for these investments, the fair value of each of these investments is determined in good faith using significant unobservable inputs by the Valuation Designee (see Note 4 in the accompanying notes to the consolidated financial statements).
[3] All of the Company’s investments are issued by eligible portfolio companies, as defined in the Investment Company Act of 1940, as amended (the “1940 Act”), unless otherwise noted. All of the Company’s investments are issued by U.S. portfolio companies unless otherwise noted.
[4] Except as otherwise noted, because there is no readily available market value for these investments, the fair value of each of these investments is determined in good faith using significant unobservable inputs by the Valuation Designee (see Note 4 in the accompanying notes to the consolidated financial statements).
[5] As defined in the 1940 Act, the Company is deemed to be an “Affiliated Person” of the portfolio company as it owns 5% or more of the portfolio company’s voting securities. See Note 5 in the accompanying notes to the consolidated financial statements for additional information on transactions in which the issuer was an Affiliated Person (but not a portfolio company that the Company is deemed to control).
[6] As defined in the 1940 Act, the Company is deemed to be an “Affiliated Person” of the portfolio company as it owns 5% or more of the portfolio company’s voting securities. See Note 5 in the accompanying notes to the consolidated financial statements for additional information on transactions in which the issuer was an Affiliated Person (but not a portfolio company that the Company is deemed to control).
[7] As defined in the 1940 Act, the Company is deemed to be both an “Affiliated Person” of and to “Control” this portfolio company as it owns more than 25% of the portfolio company’s voting securities. See Note 5 in the accompanying notes to the consolidated financial statements for additional information on transactions in which the issuer was both an Affiliated Person and a portfolio company that the Company is deemed to Control.
[8] All or a portion of this security was held in MC Income Plus Financing SPV II LLC (“SPV II”) as collateral for the Company’s senior secured credit facility (the “SPV II Credit Facility”) with KeyBank National Association (see Note 7 in the accompanying notes to the consolidated financial statements).
[9] All or a portion of this security was held in MC Income Plus Financing SPV III LLC (“SPV III”) as collateral for the Company’s secured revolving credit facility (the “SPV III Credit Facility”) with Goldman Sachs Bank USA (see Note 7 in the accompanying notes to the consolidated financial statements).
[10] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding II, LLC (“2023 Issuer”) as collateral for the Company’s asset-backed securitization (the “2023 ABS”) (see Note 7 in the accompanying notes to the consolidated financial statements).
[11] All or a portion of this commitment was unfunded at December 31, 2025. As such, interest is earned only on the funded portion of this commitment.
[12] This delayed draw loan requires that certain financial covenants be met by the portfolio company prior to any fundings by the Company.
[13] This investment is treated as a non-qualifying asset under Section 55(a) of the 1940 Act. Under the 1940 Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company’s total assets. As of December 31, 2025, non-qualifying assets totaled 12.7% of the Company’s total assets.
[14] All or a portion of this commitment was unfunded at June 30, 2026. As such, interest is earned only on the funded portion of this commitment.
[15] This delayed draw loan requires that certain financial covenants be met by the portfolio company prior to any fundings by the Company.
[16] This investment is treated as a non-qualifying asset under Section 55(a) of the 1940 Act. Under the 1940 Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company’s total assets. As of June 30, 2026, non-qualifying assets totaled 14.0% of the Company’s total assets.
[17] Investment is held by a taxable subsidiary of the Company. See Note 2 in the accompanying notes to the consolidated financial statements for additional information on the Company’s wholly-owned taxable subsidiaries.
[18] Investment is held by a taxable subsidiary of the Company. See Note 2 in the accompanying notes to the consolidated financial statements for additional information on the Company’s wholly-owned taxable subsidiaries.
[19] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding, LLC (“2022 Issuer”) as collateral for the Company’s asset-backed securitization (the “2022 ABS”) (see Note 7 in the accompanying notes to the consolidated financial statements).
[20] All or a portion of this security was held in MC Income Plus Financing SPV IV LLC (“SPV IV”) as collateral for the Company’s secured revolving credit facility (the “SPV IV Credit Facility”) with Capital One, National Association (see Note 7 in the accompanying notes to the consolidated financial statements).
[21] All or a portion of this security was held in MC Income Plus Financing SPV IV LLC (“SPV IV”) as collateral for the Company’s secured revolving credit facility (the “SPV IV Credit Facility”) with Capital One, National Association (see Note 7 in the accompanying notes to the consolidated financial statements).
[22] All or a portion of this security was held in MC Income Plus Financing SPV V LLC ("SPV V") as collateral for the Company's secured revolving credit facility (the "SPV V Credit Facility") with Capital One, National Association (see Note 7 in the accompanying notes to the consolidated financial statements).
[23] All or a portion of this security was held in MC Income Plus Financing SPV II LLC (“SPV II”) as collateral for the Company’s senior secured credit facility (the “SPV II Credit Facility”) with KeyBank National Association (see Note 7 in the accompanying notes to the consolidated financial statements).
[24] All or a portion of this security was held in MC Income Plus Financing SPV V LLC ("SPV V") as collateral for the Company's secured revolving credit facility (the "SPV V Credit Facility") with Capital One, National Association (see Note 7 in the accompanying notes to the consolidated financial statements).
[25] All or a portion of this security was held in MC Income Plus Financing SPV LLC (“SPV”) as collateral for the Company’s secured revolving credit facility (the “SPV Credit Facility”) with KeyBank National Association (see Note 7 in the accompanying notes to the consolidated financial statements).
[26] All or a portion of this security was held in MC Income Plus Financing SPV LLC (“SPV”) as collateral for the Company’s secured revolving credit facility (the “SPV Credit Facility”) with KeyBank National Association (see Note 7 in the accompanying notes to the consolidated financial statements).
[27] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding III, LLC (“2025 Issuer”) as collateral for the Company’s asset-backed securitization (the “2025 ABS”) (see Note 7 in the accompanying notes to the consolidated financial statements).
[28] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding II, LLC (“2023 Issuer”) as collateral for the Company’s asset-backed securitization (the “2023 ABS”). (See Note 7 in the accompanying notes to the consolidated financial statements).
[29] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding III, LLC (“2025 Issuer”) as collateral for the Company’s asset-backed securitization (the “2025 ABS”) (see Note 7 in the accompanying notes to the consolidated financial statements).
[30] The headquarters of this portfolio company is located in United Kingdom.
[31] The headquarters of this portfolio company is located in United Kingdom
[32] All or a portion of this security was held in MC Income Plus Financing SPV III LLC (“SPV III”) as collateral for the Company’s secured revolving credit facility (the “SPV III Credit Facility”) with Goldman Sachs Bank USA (see Note 7 in the accompanying notes to the consolidated financial statements).
[33] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding, LLC (“2022 Issuer”) as collateral for the Company’s asset-backed securitization (the “2022 ABS”). (See Note 7 in the accompanying notes to the consolidated financial statements).
[34] This position was on non-accrual status as of June 30, 2026, meaning that the Company has ceased accruing interest income on the position. See Note 2 in the accompanying notes to the consolidated financial statements for additional information on the Company’s accounting policies.
[35] This loan is denominated in Canadian dollars and is translated into U.S. dollars as of the valuation date.
[36] This position was on non-accrual status as of December 31, 2025, meaning that the Company has ceased accruing interest income on the position. See Note 2 in the accompanying notes to the consolidated financial statements for additional information on the Company’s accounting policies.
[37] This loan is denominated in Canadian dollars and is translated into U.S. dollars as of the valuation date.
[38] This is a demand note with no stated maturity.
[39] This is a demand note with no stated maturity.
[40] The headquarters of this portfolio company is located in Luxembourg.
[41] This loan is denominated in Euros and is translated into U.S. dollars as of the valuation date.
[42] This loan is denominated in Euros and is translated into U.S. dollars as of the valuation date.
[43] This loan is denominated in Great Britain pounds and is translated into U.S. dollars as of the valuation date.
[44] This loan is denominated in Great Britain pounds and is translated into U.S. dollars as of the valuation date.
[45] The headquarters of this portfolio company is located in Canada.
[46] The headquarters of this portfolio company is located in Canada.
[47] The headquarters of this portfolio company is located in Luxembourg.
[48] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $835.
[49] As of June 30, 2026, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $835
[50] The headquarters of this portfolio company is located in Ireland.
[51] The headquarters of this portfolio company is located in France.
[52] As of June 30, 2026, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $760.
[53] The investment is subject to a servicing agreement whereby the Company earns a pooled effective yield of 14.7%.
[54] The investment is subject to a servicing agreement whereby the Company earns a pooled effective yield of 14.3%.
[55] Prior to the Asset Purchase, as defined in Note 1, the investments in HFZ Capital Group LLC (“HFZ”) and HFZ Member RB Portfolio, LLC ("Member RB") were restructured during 2021. As part of the restructuring of HFZ, a 15.9% equity interest in MC Asset Management (Corporate), LLC ("Corporate") was obtained. As part of the Member RB restructuring, the loan in Member RB was exchanged for a promissory note in MC Asset Management (Industrial), LLC ("Industrial"). Corporate owns 100% of the equity of Industrial. In conjunction with these restructurings, $4,758 of principal of the loan to HFZ was participated as an equity contribution to Industrial. This participation did not qualify for sale accounting under ASC Topic 860 – Transfers and Servicing because the sale did not meet the definition of a "participating interest," as defined in the guidance, in order for sale treatment to be allowed. As a result, the full investment in HFZ continues to be reflected but the loan has been split into two investments. A portion of the contractual interest has been recorded based on expected future cash flows.
[56] The headquarters of this portfolio company is located in Finland.
[57] The headquarters of this portfolio company is located in Finland.
[58] The headquarters of this portfolio company is located in Singapore.
[59] As of June 30, 2026, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $1,091 for a total commitment of $3,536.
[60] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $1,091 for a total commitment of $3,536.
[61] Investment position or portion thereof unsettled as of December 31, 2025.
[62] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $565.
[63] As of June 30, 2026, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $556.
[64] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $24,478 for a total commitment of $45,000.
[65] As of June 30, 2026, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $18,560 for a total commitment of $45,000.
[66] The headquarters of this portfolio company is located in Australia.
[67] This loan is denominated in Australian dollars and is translated into U.S. dollars as of the valuation date.
[68] The headquarters of this portfolio company is located in Australia.
[69] This loan is denominated in Australian dollars and is translated into U.S. dollars as of the valuation date.
[70] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $884.
[71] As of June 30, 2026, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $884.
[72] The fair value of this investment was valued using Level 1 inputs. See Note 4 in the accompanying notes to the consolidated financial statements.
[73] The fair value of this investment was valued using Level 1 inputs. See Note 4 in the accompanying notes to the consolidated financial statements.
[74] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $34,952 for a total commitment of $41,855.
[75] As of June 30, 2026, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $34,952 for a total commitment of $41,855.
[76] This investment represents a note convertible to preferred shares of the borrower.
[77] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $1,197.
[78] As of June 30, 2026, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $1,197.