Schedule 12-14s - Summary of schedule of investment (Details) - USD ($)  $ in Thousands  | 
3 Months Ended | 
6 Months Ended | 
12 Months Ended | 
 | 
Jun. 30, 2023  | 
Jun. 30, 2022  | 
Jun. 30, 2023  | 
Jun. 30, 2022  | 
Dec. 31, 2022  | 
Dec. 31, 2021  | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
 | 
$ 116,231
 | 
 | 
$ 72,115
 | 
 | 
$ 221,321
 | 
 | 
$ 137,272
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
 | 
217
 | 
 | 
(2,133)
 | 
 | 
8,177
 | 
 | 
(4,514)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
3,114,097
 | 
 | 
 
 | 
 | 
3,114,097
 | 
 | 
 
 | 
 | 
$ 3,005,696
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
3,112,789
 | 
 | 
 
 | 
 | 
3,112,789
 | 
 | 
 
 | 
 | 
2,963,955
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
18,858
 | 
 | 
(48,316)
 | 
 | 
39,963
 | 
 | 
(85,058)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Coronado Aesthetics L L C [Member] | Preferred Stock [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[1],[2] | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Medical Devices And Equipment [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
1,052
 | 
 | 
 
 | 
 | 
1,052
 | 
 | 
 
 | 
 | 
1,834
 | 
 | 
 
 | 
 | 
| Diversified Financial Services [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
94,077
 | 
 | 
 
 | 
 | 
94,077
 | 
 | 
 
 | 
 | 
68,569
 | 
 | 
 
 | 
 | 
| Consumer And Business Services [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
459,276
 | 
 | 
 
 | 
 | 
459,276
 | 
 | 
 
 | 
 | 
439,384
 | 
 | 
 
 | 
 | 
| Sustainable And Renewable Technology [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
11,333
 | 
 | 
 
 | 
 | 
11,333
 | 
 | 
 
 | 
 | 
15,486
 | 
 | 
 
 | 
 | 
| Senior Secured Debt [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
2,878,923
 | 
 | 
 
 | 
 | 
2,878,923
 | 
 | 
 
 | 
 | 
2,741,388
 | 
 | 
 
 | 
 | 
| Unsecured Debt [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
59,019
 | 
 | 
 
 | 
 | 
59,019
 | 
 | 
 
 | 
 | 
54,056
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[3] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
3,415
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
3,772
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
 
 | 
 | 
86,488
 | 
 | 
 
 | 
 | 
86,488
 | 
 | 
 
 | 
 | 
$ 82,962
 | 
 | 
| Gross Additions | 
[4] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
3,667
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
[5] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
5,781
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
5,640
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
 | 
 
 | 
 | 
 
 | 
 | 
2,209
 | 
[2] | 
2,292
 | 
[3] | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[6] | 
0
 | 
 | 
0
 | 
 | 
0
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
88,317
 | 
 | 
 
 | 
 | 
88,317
 | 
 | 
 
 | 
 | 
87,271
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
90,923
 | 
[6],[7] | 
82,875
 | 
[6] | 
90,923
 | 
[6],[7] | 
82,875
 | 
[6] | 
76,458
 | 
[8] | 
73,504
 | 
 | 
| Gross Additions | 
 | 
 
 | 
 | 
 
 | 
 | 
1,046
 | 
[9] | 
3,189
 | 
[4] | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[10] | 
0
 | 
[5] | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[6] | 
4,573
 | 
 | 
4,728
 | 
 | 
13,419
 | 
 | 
6,182
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
 | 
 
 | 
 | 
 
 | 
 | 
1,867
 | 
[2] | 
1,950
 | 
[3] | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
65,904
 | 
 | 
 
 | 
 | 
65,904
 | 
 | 
 
 | 
 | 
64,858
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
83,850
 | 
[7] | 
74,667
 | 
 | 
83,850
 | 
[7] | 
74,667
 | 
 | 
68,416
 | 
[8] | 
65,235
 | 
 | 
| Gross Additions | 
 | 
 
 | 
 | 
 
 | 
 | 
1,046
 | 
[9] | 
3,189
 | 
[4] | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[10] | 
0
 | 
[5] | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
 
 | 
 | 
 
 | 
 | 
14,388
 | 
 | 
6,243
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
 | 
 
 | 
 | 
 
 | 
 | 
342
 | 
[2] | 
342
 | 
[3] | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[9] | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
22,413
 | 
 | 
 
 | 
 | 
22,413
 | 
 | 
 
 | 
 | 
22,413
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
7,073
 | 
[7] | 
8,208
 | 
 | 
7,073
 | 
[7] | 
8,208
 | 
 | 
8,042
 | 
[8] | 
8,269
 | 
 | 
| Gross Additions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[9] | 
0
 | 
[4] | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[10] | 
0
 | 
[5] | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
 
 | 
 | 
 
 | 
 | 
(969)
 | 
 | 
(61)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Hercules Adviser L L C [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[6] | 
0
 | 
 | 
0
 | 
 | 
0
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[6] | 
39,161
 | 
 | 
35,181
 | 
 | 
39,161
 | 
 | 
35,181
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[6] | 
2,566
 | 
 | 
8,637
 | 
 | 
8,008
 | 
 | 
11,191
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Hercules Adviser L L C [Member] | Member Units [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[2],[11] | 
0
 | 
[3],[12] | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[9],[11] | 
0
 | 
[12] | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
27,161
 | 
[11] | 
23,181
 | 
[12] | 
27,161
 | 
[11] | 
23,181
 | 
[12] | 
19,153
 | 
[11] | 
11,990
 | 
[12] | 
| Gross Additions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[9],[11] | 
0
 | 
[4],[12] | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[10],[11] | 
0
 | 
[5],[12] | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
 
 | 
 | 
 
 | 
 | 
8,008
 | 
[11] | 
11,191
 | 
[12] | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Coronado Aesthetics L L C [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[6] | 
0
 | 
 | 
0
 | 
 | 
0
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[6] | 
297
 | 
 | 
422
 | 
 | 
297
 | 
 | 
422
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[6] | 
(41)
 | 
 | 
(192)
 | 
 | 
(22)
 | 
 | 
(143)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Coronado Aesthetics L L C [Member] | Common Stock [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[2] | 
0
 | 
[3],[13] | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[1],[9] | 
0
 | 
[13] | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
5
 | 
[1] | 
10
 | 
[13] | 
5
 | 
[1] | 
10
 | 
[13] | 
6
 | 
[1] | 
65
 | 
[13] | 
| Gross Additions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[1],[9] | 
0
 | 
[4],[13] | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[1],[10] | 
0
 | 
[5],[13] | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
 
 | 
 | 
 
 | 
 | 
(1)
 | 
[1] | 
(55)
 | 
[13] | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Coronado Aesthetics L L C [Member] | Preferred Stock [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[3],[13] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[1] | 
0
 | 
[13] | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
292
 | 
[1] | 
412
 | 
[13] | 
292
 | 
[1] | 
412
 | 
[13] | 
313
 | 
[1] | 
500
 | 
[13] | 
| Gross Additions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[1],[9] | 
0
 | 
[4],[13] | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[1],[10] | 
0
 | 
[5],[13] | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
 
 | 
 | 
 
 | 
 | 
(21)
 | 
[1] | 
(88)
 | 
[13] | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Tectura Corporation [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[6] | 
0
 | 
 | 
0
 | 
 | 
0
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[6] | 
7,073
 | 
 | 
8,208
 | 
 | 
7,073
 | 
 | 
8,208
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[6] | 
(701)
 | 
 | 
(139)
 | 
 | 
(969)
 | 
 | 
(61)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Tectura Corporation [Member] | Common Stock [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[2],[14] | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[14] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
| Gross Additions | 
[9],[14] | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[14] | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Tectura Corporation [Member] | Preferred Stock [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[2],[14] | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[14] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
| Gross Additions | 
[9],[14] | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[14] | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Gibraltar Business Capital L L C [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[6] | 
0
 | 
[15] | 
0
 | 
 | 
0
 | 
[15] | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[6] | 
44,392
 | 
[15] | 
39,064
 | 
 | 
44,392
 | 
[15] | 
39,064
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[6] | 
2,667
 | 
[15] | 
(3,578)
 | 
 | 
6,402
 | 
[15] | 
(4,805)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Gibraltar Business Capital L L C [Member] | Common Stock [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[3],[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[16] | 
 
 | 
 | 
974
 | 
 | 
 
 | 
 | 
974
 | 
 | 
 
 | 
 | 
1,225
 | 
 | 
| Gross Additions | 
[4],[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
[5],[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
(251)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Gibraltar Business Capital L L C [Member] | Preferred Stock [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[3],[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[16] | 
 
 | 
 | 
15,415
 | 
 | 
 
 | 
 | 
15,415
 | 
 | 
 
 | 
 | 
19,393
 | 
 | 
| Gross Additions | 
[4],[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
[5],[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
(3,978)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Gibraltar Business Capital L L C [Member] | Member Units [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[2],[17] | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
19,779
 | 
[17] | 
 
 | 
 | 
19,779
 | 
[17] | 
 
 | 
 | 
15,244
 | 
[10] | 
 
 | 
 | 
| Gross Additions | 
[9],[17] | 
 
 | 
 | 
 
 | 
 | 
1,000
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[17] | 
 
 | 
 | 
 
 | 
 | 
3,535
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Medical Devices And Equipment [Member] | Coronado Aesthetics L L C [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
250
 | 
 | 
 
 | 
 | 
250
 | 
 | 
 
 | 
 | 
250
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
297
 | 
[7] | 
 
 | 
 | 
297
 | 
[7] | 
 
 | 
 | 
319
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Medical Devices And Equipment [Member] | Coronado Aesthetics L L C [Member] | Preferred Series A | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 250
 | 
 | 
 
 | 
 | 
$ 250
 | 
 | 
 
 | 
 | 
$ 250
 | 
 | 
 
 | 
 | 
| Shares | 
 | 
5,000,000
 | 
 | 
 
 | 
 | 
5,000,000
 | 
 | 
 
 | 
 | 
5,000,000
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
$ 292
 | 
[7] | 
 
 | 
 | 
$ 292
 | 
[7] | 
 
 | 
 | 
$ 313
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Medical Devices And Equipment [Member] | Coronado Aesthetics L L C [Member] | Common Stock [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 0
 | 
 | 
 
 | 
 | 
$ 0
 | 
 | 
 
 | 
 | 
$ 0
 | 
 | 
 
 | 
 | 
| Shares | 
 | 
180,000
 | 
 | 
 
 | 
 | 
180,000
 | 
 | 
 
 | 
 | 
180,000
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
$ 5
 | 
[7] | 
 
 | 
 | 
$ 5
 | 
[7] | 
 
 | 
 | 
$ 6
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Diversified Financial Services [Member] | Hercules Adviser L L C [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
12,035
 | 
 | 
 
 | 
 | 
12,035
 | 
 | 
 
 | 
 | 
12,035
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
39,161
 | 
[7] | 
 
 | 
 | 
39,161
 | 
[7] | 
 
 | 
 | 
31,153
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Diversified Financial Services [Member] | Hercules Adviser L L C [Member] | Member Units [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 35
 | 
 | 
 
 | 
 | 
$ 35
 | 
 | 
 
 | 
 | 
$ 35
 | 
 | 
 
 | 
 | 
| Shares | 
 | 
1
 | 
 | 
 
 | 
 | 
1
 | 
 | 
 
 | 
 | 
1,000
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
$ 27,161
 | 
[7] | 
 
 | 
 | 
$ 27,161
 | 
[7] | 
 
 | 
 | 
$ 19,153
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
53,619
 | 
 | 
 
 | 
 | 
53,619
 | 
 | 
 
 | 
 | 
52,573
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
44,392
 | 
[7] | 
 
 | 
 | 
44,392
 | 
[7] | 
 
 | 
 | 
36,944
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] | Preferred Series A | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 26,122
 | 
 | 
 
 | 
 | 
| Shares | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
10,602,752
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[8] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 14,137
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] | Common Stock [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 1,884
 | 
 | 
 
 | 
 | 
| Shares | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
830,000
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[8] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 1,107
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] | Member Units [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 29,006
 | 
 | 
 
 | 
 | 
$ 29,006
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Shares | 
 | 
1
 | 
 | 
 
 | 
 | 
1
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[7] | 
$ 19,779
 | 
 | 
 
 | 
 | 
$ 19,779
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Consumer And Business Services [Member] | Tectura Corporation [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
22,413
 | 
 | 
 
 | 
 | 
22,413
 | 
 | 
 
 | 
 | 
22,413
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
7,073
 | 
[7] | 
 
 | 
 | 
7,073
 | 
[7] | 
 
 | 
 | 
8,042
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Consumer And Business Services [Member] | Tectura Corporation [Member] | Preferred Series BB | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 0
 | 
 | 
 
 | 
 | 
$ 0
 | 
 | 
 
 | 
 | 
$ 0
 | 
 | 
 
 | 
 | 
| Shares | 
 | 
1,000,000
 | 
 | 
 
 | 
 | 
1,000,000
 | 
 | 
 
 | 
 | 
1,000,000
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
$ 0
 | 
[7] | 
 
 | 
 | 
$ 0
 | 
[7] | 
 
 | 
 | 
$ 0
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Consumer And Business Services [Member] | Tectura Corporation [Member] | Common Stock [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 900
 | 
 | 
 
 | 
 | 
$ 900
 | 
 | 
 
 | 
 | 
$ 900
 | 
 | 
 
 | 
 | 
| Shares | 
 | 
414,994,863
 | 
 | 
 
 | 
 | 
414,994,863
 | 
 | 
 
 | 
 | 
414,994,863
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
$ 0
 | 
[7] | 
 
 | 
 | 
$ 0
 | 
[7] | 
 
 | 
 | 
$ 0
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Senior Secured Debt [Member] | Tectura Corporation [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
 | 
 
 | 
 | 
 
 | 
 | 
342
 | 
[2],[14] | 
342
 | 
[3],[18] | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[18] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
$ 7,073
 | 
[14] | 
8,208
 | 
[18] | 
7,073
 | 
[14] | 
8,208
 | 
[18] | 
$ 8,042
 | 
[14] | 
8,269
 | 
[18] | 
| Gross Additions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[9],[14] | 
0
 | 
[4],[18] | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[10],[14] | 
0
 | 
[5],[18] | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
 
 | 
 | 
 
 | 
 | 
$ (969)
 | 
[14] | 
(61)
 | 
[18] | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Senior Secured Debt [Member] | Consumer And Business Services [Member] | Tectura Corporation [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Interest Rate, Paid in Kind | 
 | 
5.00%
 | 
 | 
 
 | 
 | 
5.00%
 | 
 | 
 
 | 
 | 
5.00%
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 13,263
 | 
 | 
 
 | 
 | 
$ 13,263
 | 
 | 
 
 | 
 | 
$ 240
 | 
 | 
 
 | 
 | 
| Principal Amount | 
 | 
23,703
 | 
 | 
 
 | 
 | 
$ 23,703
 | 
 | 
 
 | 
 | 
$ 10,680
 | 
 | 
 
 | 
 | 
| Maturity Date | 
 | 
 
 | 
 | 
 
 | 
 | 
2024-07
 | 
 | 
 
 | 
 | 
2024-07
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
0
 | 
[7] | 
 
 | 
 | 
$ 0
 | 
[7] | 
 
 | 
 | 
$ 0
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Unsecured Debt [Member] | Hercules Adviser L L C [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
 | 
 
 | 
 | 
 
 | 
 | 
302
 | 
[2],[11] | 
239
 | 
[3],[12] | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[9],[11] | 
0
 | 
[12] | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
12,000
 | 
[11] | 
12,000
 | 
[12] | 
12,000
 | 
[11] | 
12,000
 | 
[12] | 
12,000
 | 
[11] | 
8,850
 | 
[12] | 
| Gross Additions | 
[4],[12] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
3,150
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[10],[11] | 
0
 | 
[5],[12] | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[9],[11] | 
0
 | 
[12] | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Unsecured Debt [Member] | Gibraltar Business Capital L L C [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
 | 
 
 | 
 | 
 
 | 
 | 
1,565
 | 
[2],[17] | 
1,711
 | 
[3],[16] | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[16] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
$ 24,613
 | 
[17] | 
22,675
 | 
[16] | 
24,613
 | 
[17] | 
22,675
 | 
[16] | 
$ 21,700
 | 
[10] | 
23,212
 | 
[16] | 
| Gross Additions | 
 | 
 
 | 
 | 
 
 | 
 | 
46
 | 
[9],[17] | 
39
 | 
[4],[16] | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
[10],[17] | 
0
 | 
[5],[16] | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 2,867
 | 
[17] | 
(576)
 | 
[16] | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Unsecured Debt [Member] | Diversified Financial Services [Member] | Hercules Adviser L L C [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Interest Rate, Paid in Cash | 
 | 
5.00%
 | 
 | 
 
 | 
 | 
5.00%
 | 
 | 
 
 | 
 | 
5.00%
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 12,000
 | 
 | 
 
 | 
 | 
$ 12,000
 | 
 | 
 
 | 
 | 
$ 12,000
 | 
 | 
 
 | 
 | 
| Principal Amount | 
 | 
12,000
 | 
 | 
 
 | 
 | 
$ 12,000
 | 
 | 
 
 | 
 | 
$ 12,000
 | 
 | 
 
 | 
 | 
| Maturity Date | 
 | 
 
 | 
 | 
 
 | 
 | 
2025-06
 | 
 | 
 
 | 
 | 
2023-05
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
$ 12,000
 | 
[7] | 
 
 | 
 | 
$ 12,000
 | 
[7] | 
 
 | 
 | 
$ 12,000
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Unsecured Debt [Member] | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Interest Rate, Paid in Cash | 
 | 
11.50%
 | 
 | 
 
 | 
 | 
11.50%
 | 
 | 
 
 | 
 | 
14.50%
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 24,613
 | 
 | 
 
 | 
 | 
$ 24,613
 | 
 | 
 
 | 
 | 
$ 14,715
 | 
 | 
 
 | 
 | 
| Principal Amount | 
 | 
25,000
 | 
 | 
 
 | 
 | 
25,000
 | 
 | 
 
 | 
 | 
$ 15,000
 | 
 | 
 
 | 
 | 
| Maturity Date | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
2026-09
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
$ 24,613
 | 
[7] | 
 
 | 
 | 
$ 24,613
 | 
[7] | 
 
 | 
 | 
$ 12,802
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Unsecured Debt One [Member] | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] | Majority Owned Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Interest Rate, Paid in Cash | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
11.50%
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 9,852
 | 
 | 
 
 | 
 | 
| Principal Amount | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 10,000
 | 
 | 
 
 | 
 | 
| Maturity Date | 
 | 
 
 | 
 | 
 
 | 
 | 
2026-09
 | 
 | 
 
 | 
 | 
2026-09
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[8] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 8,898
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Senior Secured Debt One [Member] | Consumer And Business Services [Member] | Tectura Corporation [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Interest Rate, Paid in Cash | 
 | 
8.25%
 | 
 | 
 
 | 
 | 
8.25%
 | 
 | 
 
 | 
 | 
8.25%
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
$ 8,250
 | 
 | 
 
 | 
 | 
$ 8,250
 | 
 | 
 
 | 
 | 
$ 8,250
 | 
 | 
 
 | 
 | 
| Principal Amount | 
 | 
8,250
 | 
 | 
 
 | 
 | 
$ 8,250
 | 
 | 
 
 | 
 | 
$ 8,250
 | 
 | 
 
 | 
 | 
| Maturity Date | 
 | 
 
 | 
 | 
 
 | 
 | 
2024-07
 | 
 | 
 
 | 
 | 
2024-07
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
7,073
 | 
[7] | 
 
 | 
 | 
$ 7,073
 | 
[7] | 
 
 | 
 | 
$ 8,042
 | 
[8] | 
 
 | 
 | 
| Investment, Affiliated Issuer, Controlled [Member] | Senior Secured Debt Two [Member] | Consumer And Business Services [Member] | Tectura Corporation [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Interest Rate, Paid in Kind | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
5.00%
 | 
 | 
 
 | 
 | 
| Investment cost | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 13,023
 | 
 | 
 
 | 
 | 
| Principal Amount | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 13,023
 | 
 | 
 
 | 
 | 
| Maturity Date | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
2024-07
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[8] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ 0
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Noncontrolled [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[3] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
1,123
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
 | 
0
 | 
 | 
0
 | 
 | 
0
 | 
 | 
3,772
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
 | 
 
 | 
 | 
3,613
 | 
 | 
 
 | 
 | 
3,613
 | 
 | 
 
 | 
 | 
9,458
 | 
 | 
| Gross Additions | 
[4] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
478
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
[5] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
5,781
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
 | 
$ 0
 | 
 | 
(1,295)
 | 
 | 
0
 | 
 | 
(542)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Noncontrolled [Member] | Pineapple Energy L L C [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[6],[19] | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[6],[19] | 
 
 | 
 | 
3,613
 | 
 | 
 
 | 
 | 
3,613
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[6],[19] | 
 
 | 
 | 
(1,295)
 | 
 | 
 
 | 
 | 
(422)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Noncontrolled [Member] | Pineapple Energy L L C [Member] | Common Stock [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[3],[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[20] | 
 
 | 
 | 
673
 | 
 | 
 
 | 
 | 
673
 | 
 | 
 
 | 
 | 
591
 | 
 | 
| Gross Additions | 
[4],[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
400
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
[5],[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
(318)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Noncontrolled [Member] | Black Crow A I Inc [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[6],[19] | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
3,772
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[6],[19] | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[6],[19] | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
(120)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Noncontrolled [Member] | Black Crow A I Inc [Member] | Preferred Stock [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[3],[21] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[21] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
3,772
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[21] | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
1,120
 | 
 | 
| Gross Additions | 
[4],[21] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
[5],[21] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
(1,000)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[21] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
(120)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuer, Noncontrolled [Member] | Senior Secured Debt [Member] | Pineapple Energy L L C [Member] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross Investment Income, Operating | 
[3],[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
1,123
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment Owned, Fair Value | 
[20] | 
 
 | 
 | 
$ 2,940
 | 
 | 
 
 | 
 | 
2,940
 | 
 | 
 
 | 
 | 
$ 7,747
 | 
 | 
| Gross Additions | 
[4],[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
78
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Gross reductions | 
[5],[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
(4,781)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Net Change in Unrealized Appreciation (Depreciation) | 
[20] | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
$ (104)
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, Affiliated Issuers Controlled, Not Majority-Owned [Member] | Senior Secured Debt [Member] | Tectura Corporation [Member] | Other Control Investments | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments in and Advances to Affiliates [Line Items] | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
| Realized Gain (Loss) | 
[9],[14] | 
 
 | 
 | 
 
 | 
 | 
$ 0
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 
 | 
 | 
 | 
 |