CONSOLIDATED SCHEDULE OF INVESTMENTS IN AND ADVANCES TO AFFILIATES - Schedule of Investment Gain/(Loss) (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
$ 140,115
|
$ 138,093
|
$ 430,765
|
$ 395,063
|
| Investments, fair value, beginning balance |
|
|
4,466,647
|
|
| Net Change in Unrealized Appreciation (Depreciation) |
8,155
|
32,989
|
(7,284)
|
55,214
|
| Investments, fair value, ending balance |
4,845,903
|
|
4,845,903
|
|
| Control and affiliated investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
10,526
|
|
| Realized Gain (Loss) |
5
|
|
5
|
|
| Investments, fair value, beginning balance |
|
|
115,051
|
|
| Gross Additions |
|
|
20,935
|
|
| Gross Reductions |
|
|
(8,359)
|
|
| Net Change in Unrealized Appreciation (Depreciation) |
(575)
|
|
(2,561)
|
|
| Investments, fair value, ending balance |
125,066
|
|
125,066
|
|
| Control investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
10,526
|
10,526
|
| Realized Gain (Loss) |
0
|
0
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
115,051
|
113,179
|
| Gross Additions |
|
|
10,251
|
13,794
|
| Gross Reductions |
|
|
(1,000)
|
(13,250)
|
| Net Change in Unrealized Appreciation (Depreciation) |
(286)
|
(2,541)
|
(2,272)
|
(1,400)
|
| Investments, fair value, ending balance |
122,030
|
112,323
|
122,030
|
112,323
|
| Control investments | Majority Owned Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
10,011
|
10,010
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
105,710
|
101,522
|
| Gross Additions |
|
|
10,251
|
13,794
|
| Gross Reductions |
|
|
(1,000)
|
(13,250)
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
(2,703)
|
1,981
|
| Investments, fair value, ending balance |
112,258
|
104,047
|
112,258
|
104,047
|
| Control investments | Other Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
515
|
516
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
9,341
|
11,657
|
| Gross Additions |
|
|
0
|
0
|
| Gross Reductions |
|
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
431
|
(3,381)
|
| Investments, fair value, ending balance |
9,772
|
8,276
|
9,772
|
8,276
|
| Affiliate Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
0
|
|
| Realized Gain (Loss) |
5
|
0
|
5
|
0
|
| Investments, fair value, beginning balance |
|
|
0
|
|
| Gross Additions |
|
|
10,684
|
|
| Gross Reductions |
|
|
(7,359)
|
|
| Net Change in Unrealized Appreciation (Depreciation) |
(289)
|
0
|
(289)
|
0
|
| Investments, fair value, ending balance |
3,036
|
|
3,036
|
|
| Coronado Aesthetics, LLC | Control investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Realized Gain (Loss) |
0
|
0
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
(42)
|
31
|
(38)
|
275
|
| Investments, fair value, ending balance |
180
|
344
|
180
|
344
|
| Gibraltar Acquisition LLC | Control investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Realized Gain (Loss) |
0
|
0
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
(242)
|
(118)
|
816
|
386
|
| Investments, fair value, ending balance |
62,136
|
60,193
|
62,136
|
60,193
|
| Hercules Adviser LLC | Control investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Realized Gain (Loss) |
0
|
0
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
(742)
|
(712)
|
(3,481)
|
1,320
|
| Investments, fair value, ending balance |
49,942
|
43,510
|
49,942
|
43,510
|
| Tectura Corporation | Control investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Realized Gain (Loss) |
0
|
0
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
740
|
(1,742)
|
431
|
(3,381)
|
| Investments, fair value, ending balance |
9,772
|
8,276
|
9,772
|
8,276
|
| Annex Cloud | Affiliate Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Realized Gain (Loss) |
5
|
|
5
|
|
| Net Change in Unrealized Appreciation (Depreciation) |
(289)
|
|
(289)
|
|
| Investments, fair value, ending balance |
3,036
|
|
3,036
|
|
| Preferred Stock | Coronado Aesthetics, LLC | Control investments | Majority Owned Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
0
|
0
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
218
|
69
|
| Gross Additions |
|
|
0
|
0
|
| Gross Reductions |
|
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
(38)
|
274
|
| Investments, fair value, ending balance |
180
|
343
|
180
|
343
|
| Preferred Stock | Tectura Corporation | Control investments | Other Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
0
|
0
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
1,250
|
3,623
|
| Gross Additions |
|
|
0
|
0
|
| Gross Reductions |
|
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
272
|
(3,414)
|
| Investments, fair value, ending balance |
1,522
|
209
|
1,522
|
209
|
| Common Stock | Coronado Aesthetics, LLC | Control investments | Majority Owned Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
0
|
0
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
0
|
0
|
| Gross Additions |
|
|
0
|
0
|
| Gross Reductions |
|
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
0
|
1
|
| Investments, fair value, ending balance |
0
|
1
|
0
|
1
|
| Common Stock | Tectura Corporation | Control investments | Other Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
0
|
0
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
0
|
7
|
| Gross Additions |
|
|
0
|
0
|
| Gross Reductions |
|
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
0
|
(7)
|
| Investments, fair value, ending balance |
0
|
0
|
0
|
0
|
| Common Stock | Annex Cloud | Affiliate Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
0
|
|
| Realized Gain (Loss) |
|
|
5
|
|
| Investments, fair value, beginning balance |
|
|
0
|
|
| Gross Additions |
|
|
7,359
|
|
| Gross Reductions |
|
|
(7,359)
|
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
0
|
|
| Investments, fair value, ending balance |
0
|
|
0
|
|
| Unsecured Debt | Gibraltar Acquisition LLC | Control investments | Majority Owned Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
3,520
|
3,910
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
38,255
|
36,212
|
| Gross Additions |
|
|
102
|
1,794
|
| Gross Reductions |
|
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
0
|
0
|
| Investments, fair value, ending balance |
38,357
|
38,006
|
38,357
|
38,006
|
| Unsecured Debt | Hercules Adviser LLC | Control investments | Majority Owned Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
191
|
6,100
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
0
|
12,000
|
| Gross Additions |
|
|
8,000
|
0
|
| Gross Reductions |
|
|
0
|
(12,000)
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
0
|
0
|
| Investments, fair value, ending balance |
8,000
|
0
|
8,000
|
0
|
| Member Units | Gibraltar Acquisition LLC | Control investments | Majority Owned Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
0
|
0
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
23,963
|
23,051
|
| Gross Additions |
|
|
0
|
0
|
| Gross Reductions |
|
|
(1,000)
|
(1,250)
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
816
|
386
|
| Investments, fair value, ending balance |
23,779
|
22,187
|
23,779
|
22,187
|
| Member Units | Hercules Adviser LLC | Control investments | Majority Owned Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
6,300
|
0
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
43,274
|
30,190
|
| Gross Additions |
|
|
2,149
|
12,000
|
| Gross Reductions |
|
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
(3,481)
|
1,320
|
| Investments, fair value, ending balance |
41,942
|
43,510
|
41,942
|
43,510
|
| Senior Debt | Tectura Corporation | Control investments | Other Control Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
515
|
516
|
| Realized Gain (Loss) |
|
|
0
|
0
|
| Investments, fair value, beginning balance |
|
|
8,091
|
8,027
|
| Gross Additions |
|
|
0
|
0
|
| Gross Reductions |
|
|
0
|
0
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
159
|
40
|
| Investments, fair value, ending balance |
8,250
|
$ 8,067
|
8,250
|
$ 8,067
|
| Senior Debt | Annex Cloud | Affiliate Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
0
|
|
| Realized Gain (Loss) |
|
|
0
|
|
| Investments, fair value, beginning balance |
|
|
0
|
|
| Gross Additions |
|
|
3,325
|
|
| Gross Reductions |
|
|
0
|
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
(289)
|
|
| Investments, fair value, ending balance |
3,036
|
|
3,036
|
|
| Warrants |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Investments, fair value, beginning balance |
|
|
41,162
|
|
| Investments, fair value, ending balance |
46,290
|
|
46,290
|
|
| Warrants | Annex Cloud | Affiliate Investments |
|
|
|
|
| Schedule Of Investments [Line Items] |
|
|
|
|
| Amount of Interest, Dividends, and Fees Credited to Income |
|
|
0
|
|
| Realized Gain (Loss) |
|
|
0
|
|
| Investments, fair value, beginning balance |
|
|
0
|
|
| Gross Additions |
|
|
0
|
|
| Gross Reductions |
|
|
0
|
|
| Net Change in Unrealized Appreciation (Depreciation) |
|
|
0
|
|
| Investments, fair value, ending balance |
$ 0
|
|
$ 0
|
|