v3.26.1
Agreements and Related Party Transactions - Summary of Investments in Controlled Affiliates (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Investments In And Advances To Affiliates [Line Items]    
Fair Value, Beginning balance [1],[2],[3] $ 1,569,418  
Fair Value, Ending balance [4],[5],[6] 1,570,668  
Controlled Affiliated    
Investments In And Advances To Affiliates [Line Items]    
Fair Value, Beginning balance 60,351 $ 48,051
Gross Additions 13,654 1,397
Gross Reductions (10,501) (3,642)
Net Realized Gains/ (Losses) (10,909) (3,800)
Change in Unrealized Gains/ (Losses) 1,937 7,124
Fair Value, Ending balance 54,532 49,130
Dividend, Interest, PIK and Other Income 3,583 3,223
Controlled Affiliated | Envocore LLC    
Investments In And Advances To Affiliates [Line Items]    
Fair Value, Beginning balance 10,333 9,221
Gross Additions   1,397
Gross Reductions (10,292) (1,285)
Net Realized Gains/ (Losses) (3,427)  
Change in Unrealized Gains/ (Losses) 3,386 1,245
Fair Value, Ending balance   10,578
Dividend, Interest, PIK and Other Income 53 348
Controlled Affiliated | First Eagle Logan JV, LLC    
Investments In And Advances To Affiliates [Line Items]    
Fair Value, Beginning balance 33,386 32,575
Gross Reductions   (80)
Change in Unrealized Gains/ (Losses) (5,447) 1,716
Fair Value, Ending balance 27,939 34,211
Dividend, Interest, PIK and Other Income 3,240 2,800
Controlled Affiliated | Loadmaster Derrick & Equipment, Inc.    
Investments In And Advances To Affiliates [Line Items]    
Fair Value, Beginning balance 3,438 3,476
Gross Reductions (63) (63)
Change in Unrealized Gains/ (Losses)   928
Fair Value, Ending balance 3,375 4,341
Dividend, Interest, PIK and Other Income 24 75
Controlled Affiliated | OEM Group, LLC    
Investments In And Advances To Affiliates [Line Items]    
Fair Value, Beginning balance   2,779
Gross Reductions   (2,214)
Net Realized Gains/ (Losses)   (3,800)
Change in Unrealized Gains/ (Losses)   $ 3,235
Controlled Affiliated | Lion Cashmere Bidco Limited    
Investments In And Advances To Affiliates [Line Items]    
Gross Additions 13,654  
Net Realized Gains/ (Losses) (7,482)  
Change in Unrealized Gains/ (Losses) 6,988  
Fair Value, Ending balance 13,160  
Dividend, Interest, PIK and Other Income 44  
Controlled Affiliated | Slickdeals Holdings, LLC    
Investments In And Advances To Affiliates [Line Items]    
Fair Value, Beginning balance 13,194  
Gross Reductions (146)  
Change in Unrealized Gains/ (Losses) (2,990)  
Fair Value, Ending balance 10,058  
Dividend, Interest, PIK and Other Income $ 222  
[1] All debt investments are income-producing, unless otherwise noted. Equity and member interests are non-income-producing unless otherwise noted. The Company generally acquires its investments in private transactions exempt from registration under the Securities Act. Its investments are therefore generally subject to certain limitations on resale, and may be deemed to be “restricted securities” under the Securities Act.
[2] All positions held are non-controlled/non-affiliated investments, unless otherwise noted, as defined by the 1940 Act. Non-controlled/non-affiliated investments are investments that are neither controlled nor affiliated.
[3] The fair value of the investment was determined using significant unobservable inputs unless otherwise noted, as defined by the 1940 Act. See Note 2 “Summary of Significant Accounting Policies”.
[4] All debt investments are income-producing, unless otherwise noted. Equity and member interests are non-income-producing unless otherwise noted. The Company generally acquires its investments in private transactions exempt from registration under the Securities Act. Its investments are therefore generally subject to certain limitations on resale, and may be deemed to be “restricted securities” under the Securities Act.
[5] All positions held are non-controlled/non-affiliated investments, unless otherwise noted, as defined by the 1940 Act. Non-controlled/non-affiliated investments are investments that are neither controlled nor affiliated.
[6] The fair value of the investment was determined using significant unobservable inputs unless otherwise noted, as defined by the 1940 Act. See Note 2 “Summary of Significant Accounting Policies”.