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v3.23.1

Schedule 12-14s - Summary of schedule of investment (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | $ 105,090,000 |  | $ 65,157,000 |  |  |  |  |
Realized Gain (Loss) |  | 7,960,000 |  | (2,381,000) |  |  |  |  |
Investment cost |  | 3,150,846,000 |  |  |  | $ 3,005,696,000 |  |  |
Investment Owned At Fair Value |  | 3,130,178,000 |  |  |  | 2,963,955,000 |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | 21,105,000 |  | (36,742,000) |  |  |  |  |
Medical Devices And Equipment [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment Owned At Fair Value |  | 1,155,000 |  |  |  | 1,834,000 |  |  |
Diversified Financial Services [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment Owned At Fair Value |  | 87,805,000 |  |  |  | 68,569,000 |  |  |
Consumer And Business Services [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment Owned At Fair Value |  | 474,883,000 |  |  |  | 439,384,000 |  |  |
Sustainable And Renewable Technology [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment Owned At Fair Value |  | 12,899,000 |  |  |  | 15,486,000 |  |  |
Senior Secured Debt [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment Owned At Fair Value |  | 2,910,526,000 |  |  |  | 2,741,388,000 |  |  |
Unsecured Debt [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment Owned At Fair Value |  | 58,125,000 |  |  |  | 54,056,000 |  |  |
Investment, Affiliated Issuer [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating | [1] |  |  | 2,178,000 |  |  |  |  |
Realized Gain (Loss) |  |  |  | 3,772,000 |  |  |  |  |
Investment Owned At Fair Value |  |  |  | 81,107,000 |  |  |  | $ 82,962,000 |
Gross Additions | [2] |  |  | 1,719,000 |  |  |  |  |
Gross reductions | [3] |  |  | 5,781,000 |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  |  |  | 2,207,000 |  |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 1,135,000 | [4] | 1,131,000 | [1] |  |  |  |
Realized Gain (Loss) |  | 0 |  | 0 |  |  |  |  |
Investment cost |  | 87,293,000 |  |  |  | 87,271,000 |  |  |
Investment Owned At Fair Value |  | 85,326,000 | [5] | 76,277,000 |  | 76,458,000 | [6] | 73,504,000 |
Gross Additions |  | 22,000 | [7] | 1,319,000 | [2] |  |  |  |
Gross reductions |  | 0 | [8] | 0 | [3] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | 8,846,000 |  | 1,454,000 |  |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Hercules Adviser L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Realized Gain (Loss) | [9] | 0 |  | 0 |  |  |  |  |
Investment Owned At Fair Value | [9] | 36,595,000 |  | 24,694,000 |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) | [9] | 5,442,000 |  | 2,554,000 |  |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Coronado Aesthetics L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Realized Gain (Loss) | [9] | 0 |  | 0 |  |  |  |  |
Investment Owned At Fair Value | [9] | 256,000 |  | 614,000 |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) | [9] | (63,000) |  | 49,000 |  |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Tectura Corporation [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Realized Gain (Loss) | [9] | 0 |  | 0 |  |  |  |  |
Investment Owned At Fair Value | [9] | 7,774,000 |  | 8,347,000 |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) | [9] | (268,000) |  | 78,000 |  |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Gibraltar Business Capital L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Realized Gain (Loss) | [9] | 0 |  | 0 |  |  |  |  |
Investment Owned At Fair Value | [9] | 40,701,000 |  | 42,622,000 |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) | [9] | 3,735,000 |  | (1,227,000) |  |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 965,000 | [4] | 961,000 | [1] |  |  |  |
Realized Gain (Loss) |  | 0 |  | 0 |  |  |  |  |
Investment cost |  | 64,880,000 |  |  |  | 64,858,000 |  |  |
Investment Owned At Fair Value |  | 77,552,000 | [5] | 67,930,000 |  | 68,416,000 | [6] | 65,235,000 |
Gross Additions |  | 22,000 | [7] | 1,319,000 | [2] |  |  |  |
Gross reductions |  | 0 | [8] | 0 | [3] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | 9,114,000 |  | 1,376,000 |  |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Hercules Adviser L L C [Member] | Member Units [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 0 | [4],[10] | 0 | [1],[11] |  |  |  |
Realized Gain (Loss) |  | 0 | [10] | 0 | [11] |  |  |  |
Investment Owned At Fair Value |  | 24,595,000 | [10] | 14,544,000 | [11] | 19,153,000 | [10] | 11,990,000 | [11]
Gross Additions |  | 0 | [7],[10] | 0 | [2],[11] |  |  |  |
Gross reductions |  | 0 | [8],[10] | 0 | [3],[11] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | 5,442,000 | [10] | 2,554,000 | [11] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Coronado Aesthetics L L C [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 0 | [4],[12] | 0 | [1],[13] |  |  |  |
Realized Gain (Loss) |  | 0 | [12] | 0 | [13] |  |  |  |
Investment Owned At Fair Value |  | 3,000 | [12] | 28,000 | [13] | 6,000 | [12] | 65,000 | [13]
Gross Additions |  | 0 | [7],[12] | 0 | [2],[13] |  |  |  |
Gross reductions |  | 0 | [8],[12] | 0 | [3],[13] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | (3,000) | [12] | (37,000) | [13] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Coronado Aesthetics L L C [Member] | Preferred Stock [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 0 | [4],[12] | 0 | [1],[13] |  |  |  |
Realized Gain (Loss) |  | 0 | [12] | 0 | [13] |  |  |  |
Investment Owned At Fair Value |  | 253,000 | [12] | 586,000 | [13] | 313,000 | [12] | 500,000 | [13]
Gross Additions |  | 0 | [7],[12] | 0 | [2],[13] |  |  |  |
Gross reductions |  | 0 | [8],[12] | 0 | [3],[13] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | (60,000) | [12] | 86,000 | [13] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Gibraltar Business Capital L L C [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 0 | [4],[14] | 0 | [1],[15] |  |  |  |
Realized Gain (Loss) |  | 0 | [14] | 0 | [15] |  |  |  |
Investment Owned At Fair Value |  | 1,170,000 | [14] | 1,169,000 | [15] | 1,107,000 | [14] | 1,225,000 | [15]
Gross Additions |  | 0 | [7],[14] | 0 | [2],[15] |  |  |  |
Gross reductions |  | 0 | [8],[14] | 0 | [3],[15] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | 63,000 | [14] | (56,000) | [15] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Gibraltar Business Capital L L C [Member] | Preferred Stock [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 0 | [4],[14] | 0 | [1],[15] |  |  |  |
Realized Gain (Loss) |  | 0 | [14] | 0 | [15] |  |  |  |
Investment Owned At Fair Value |  | 14,942,000 | [14] | 18,496,000 | [15] | 14,137,000 | [14] | 19,393,000 | [15]
Gross Additions |  | 0 | [7],[14] | 0 | [2],[15] |  |  |  |
Gross reductions |  | 0 | [8],[14] | 0 | [3],[15] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | 805,000 | [14] | (897,000) | [15] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Medical Devices And Equipment [Member] | Coronado Aesthetics L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | 250,000 |  |  |  | 250,000 |  |  |
Investment Owned At Fair Value |  | 256,000 | [5] |  |  | 319,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Medical Devices And Equipment [Member] | Coronado Aesthetics L L C [Member] | Preferred Series A |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | $ 250,000 |  |  |  | $ 250,000 |  |  |
Shares |  | 5,000,000 |  |  |  | 5,000,000 |  |  |
Investment Owned At Fair Value |  | $ 253,000 | [5] |  |  | $ 313,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Medical Devices And Equipment [Member] | Coronado Aesthetics L L C [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | $ 0 |  |  |  | $ 0 |  |  |
Shares |  | 180,000 |  |  |  | 180,000 |  |  |
Investment Owned At Fair Value |  | $ 3,000 | [5] |  |  | $ 6,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Diversified Financial Services [Member] | Hercules Adviser L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | 12,035,000 |  |  |  | 12,035,000 |  |  |
Investment Owned At Fair Value |  | 36,595,000 | [5] |  |  | 31,153,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Diversified Financial Services [Member] | Hercules Adviser L L C [Member] | Member Units [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | $ 35,000 |  |  |  | $ 35,000 |  |  |
Shares |  | 1 |  |  |  | 1,000 |  |  |
Investment Owned At Fair Value |  | $ 24,595,000 | [5] |  |  | $ 19,153,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | 52,595,000 |  |  |  | 52,573,000 |  |  |
Investment Owned At Fair Value |  | 40,701,000 | [5] |  |  | 36,944,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] | Preferred Series A |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | $ 26,122,000 |  |  |  | $ 26,122,000 |  |  |
Shares |  | 10,602,752 |  |  |  | 10,602,752 |  |  |
Investment Owned At Fair Value |  | $ 14,942,000 | [5] |  |  | $ 14,137,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | $ 1,884,000 |  |  |  | $ 1,884,000 |  |  |
Shares |  | 830,000 |  |  |  | 830,000 |  |  |
Investment Owned At Fair Value |  | $ 1,170,000 | [5] |  |  | $ 1,107,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Unsecured Debt [Member] | Hercules Adviser L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 150,000 | [4],[10] | 111,000 | [1],[11] |  |  |  |
Realized Gain (Loss) |  | 0 | [10] | 0 | [11] |  |  |  |
Investment Owned At Fair Value |  | 12,000,000 | [10] | 10,150,000 | [11] | 12,000,000 | [10] | 8,850,000 | [11]
Gross Additions |  | 0 | [7],[10] | 1,300,000 | [2],[11] |  |  |  |
Gross reductions |  | 0 | [8],[10] | 0 | [3],[11] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | 0 | [10] | 0 | [11] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Unsecured Debt [Member] | Gibraltar Business Capital L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 815,000 | [4],[14] | 850,000 | [1],[15] |  |  |  |
Realized Gain (Loss) | [15] |  |  | 0 |  |  |  |  |
Investment Owned At Fair Value |  | 24,589,000 | [14] | 22,957,000 | [15] | $ 21,700,000 | [14] | 23,212,000 | [15]
Gross Additions |  | 22,000 | [7],[14] | 19,000 | [2],[15] |  |  |  |
Gross reductions |  | 0 | [8],[14] | 0 | [3],[15] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | $ 2,867,000 | [14] | (274,000) | [15] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Unsecured Debt [Member] | Diversified Financial Services [Member] | Hercules Adviser L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment, Interest Rate, Paid in Cash |  | 5.00% |  |  |  | 5.00% |  |  |
Investment cost |  | $ 12,000,000 |  |  |  | $ 12,000,000 |  |  |
Principal Amount |  | $ 12,000,000 |  |  |  | $ 12,000,000 |  |  |
Maturity Date |  | 2025-06 |  |  |  | 2023-05 |  |  |
Investment Owned At Fair Value |  | $ 12,000,000 | [5] |  |  | $ 12,000,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Unsecured Debt [Member] | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment, Interest Rate, Paid in Cash |  | 11.50% |  |  |  | 14.50% |  |  |
Investment cost |  | $ 24,589,000 |  |  |  | $ 14,715,000 |  |  |
Principal Amount |  | 25,000,000 |  |  |  | $ 15,000,000 |  |  |
Maturity Date |  |  |  |  |  | 2026-09 |  |  |
Investment Owned At Fair Value |  | $ 24,589,000 | [5] |  |  | $ 12,802,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Unsecured Debt One [Member] | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  |  |  |  |  | 9,852,000 |  |  |
Principal Amount |  |  |  |  |  | $ 10,000,000 |  |  |
Maturity Date |  | 2026-09 |  |  |  | 2026-09 |  |  |
Investment Owned At Fair Value | [6] |  |  |  |  | $ 8,898,000 |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Majority Owned Control Investments | Senior Secured Debt One [Member] | Diversified Financial Services [Member] | Gibraltar Business Capital L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment, Interest Rate, Paid in Cash |  |  |  |  |  | 11.50% |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | $ 170,000 | [4] | 170,000 | [1] |  |  |  |
Realized Gain (Loss) |  | 0 |  | 0 |  |  |  |  |
Investment cost |  | 22,413,000 |  |  |  | $ 22,413,000 |  |  |
Investment Owned At Fair Value |  | 7,774,000 | [5] | 8,347,000 |  | 8,042,000 | [6] | 8,269,000 |
Gross Additions |  | 0 | [7] | 0 | [2] |  |  |  |
Gross reductions |  | 0 | [8] | 0 | [3] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | (268,000) |  | 78,000 |  |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | Tectura Corporation [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 0 | [4],[16] | 0 | [1],[17] |  |  |  |
Realized Gain (Loss) |  | 0 | [16] | 0 | [17] |  |  |  |
Investment Owned At Fair Value |  | 0 | [16] | 0 | [17] | 0 | [16] | 0 | [17]
Gross Additions |  | 0 | [7],[16] | 0 | [2],[17] |  |  |  |
Gross reductions |  | 0 | [8],[16] | 0 | [3],[17] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | 0 | [16] | 0 | [17] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | Tectura Corporation [Member] | Preferred Stock [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 0 | [4],[16] | 0 | [1],[17] |  |  |  |
Realized Gain (Loss) |  | 0 | [16] | 0 | [17] |  |  |  |
Investment Owned At Fair Value |  | 0 | [16] | 0 | [17] | 0 | [16] | 0 | [17]
Gross Additions |  | 0 | [7],[16] | 0 | [2],[17] |  |  |  |
Gross reductions |  | 0 | [8],[16] | 0 | [3],[17] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | 0 | [16] | 0 | [17] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | Consumer And Business Services [Member] | Tectura Corporation [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | 22,413,000 |  |  |  | 22,413,000 |  |  |
Investment Owned At Fair Value |  | 7,774,000 | [5] |  |  | 8,042,000 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | Consumer And Business Services [Member] | Tectura Corporation [Member] | Preferred Series BB |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | $ 0 |  |  |  | $ 0 |  |  |
Shares |  | 1,000,000 |  |  |  | 1,000,000 |  |  |
Investment Owned At Fair Value |  | $ 0 | [5] |  |  | $ 0 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | Consumer And Business Services [Member] | Tectura Corporation [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  | $ 900,000 |  |  |  | $ 900,000 |  |  |
Shares |  | 414,994,863 |  |  |  | 414,994,863 |  |  |
Investment Owned At Fair Value |  | $ 0 | [5] |  |  | $ 0 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | Senior Secured Debt [Member] | Tectura Corporation [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating |  | 170,000 | [4],[16] | 170,000 | [1],[17] |  |  |  |
Realized Gain (Loss) |  | 0 | [16] | 0 | [17] |  |  |  |
Investment Owned At Fair Value |  | 7,774,000 | [16] | 8,347,000 | [17] | $ 8,042,000 | [16] | 8,269,000 | [17]
Gross Additions |  | 0 | [7],[16] | 0 | [2],[17] |  |  |  |
Gross reductions |  | 0 | [8],[16] | 0 | [3],[17] |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | $ (268,000) | [16] | 78,000 | [17] |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | Senior Secured Debt [Member] | Consumer And Business Services [Member] | Tectura Corporation [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment, Interest Rate, Paid in Kind |  | 5.00% |  |  |  | 5.00% |  |  |
Investment cost |  | $ 13,263,000 |  |  |  | $ 240,000 |  |  |
Principal Amount |  | $ 23,703,000 |  |  |  | $ 10,680,000 |  |  |
Maturity Date |  | 2024-07 |  |  |  | 2024-07 |  |  |
Investment Owned At Fair Value |  | $ 0 | [5] |  |  | $ 0 | [6] |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | Unsecured Debt [Member] | Gibraltar Business Capital L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Realized Gain (Loss) | [14] | $ 0 |  |  |  |  |  |  |
Investment, Affiliated Issuer, Controlled [Member] | Other Control Investments | Senior Secured Debt One [Member] | Consumer And Business Services [Member] | Tectura Corporation [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment, Interest Rate, Paid in Cash |  | 8.25% |  |  |  | 8.25% |  |  |
Investment cost |  | $ 8,250,000 |  |  |  | $ 8,250,000 |  |  |
Principal Amount |  | $ 8,250,000 |  |  |  | $ 8,250,000 |  |  |
Maturity Date |  | 2024-07 |  |  |  | 2024-07 |  |  |
Investment Owned At Fair Value |  | $ 7,774,000 | [5] |  |  | $ 8,042,000 | [6] |  |
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Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment, Interest Rate, Paid in Kind |  |  |  |  |  | 5.00% |  |  |
Investment cost |  |  |  |  |  | $ 13,023,000 |  |  |
Principal Amount |  |  |  |  |  | $ 13,023,000 |  |  |
Maturity Date |  |  |  |  |  | 2024-07 |  |  |
Investment Owned At Fair Value | [6] |  |  |  |  | $ 0 |  |  |
Investment, Affiliated Issuer, Noncontrolled [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Gross Investment Income, Operating | [1] |  |  | 1,047,000 |  |  |  |  |
Realized Gain (Loss) |  | 0 |  | 3,772,000 |  |  |  |  |
Investment Owned At Fair Value |  |  |  | 4,830,000 |  |  |  | 9,458,000 |
Gross Additions | [2] |  |  | 400,000 |  |  |  |  |
Gross reductions | [3] |  |  | 5,781,000 |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) |  | $ 0 |  | 753,000 |  |  |  |  |
Investment, Affiliated Issuer, Noncontrolled [Member] | Pineapple Energy L L C [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Realized Gain (Loss) | [9],[18] |  |  | 0 |  |  |  |  |
Investment Owned At Fair Value | [9],[18] |  |  | 4,830,000 |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) | [9],[18] |  |  | 873,000 |  |  |  |  |
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 | [1],[19] |  |  | 0 |  |  |  |  |
Realized Gain (Loss) | [19] |  |  | 0 |  |  |  |  |
Investment Owned At Fair Value | [19] |  |  | 1,844,000 |  |  |  | 591,000 |
Gross Additions | [2],[19] |  |  | 400,000 |  |  |  |  |
Gross reductions | [3],[19] |  |  | 0 |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) | [19] |  |  | 853,000 |  |  |  |  |
Investment, Affiliated Issuer, Noncontrolled [Member] | Black Crow A I Inc [Member] |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Realized Gain (Loss) | [9],[18] |  |  | 3,772,000 |  |  |  |  |
Investment Owned At Fair Value | [9],[18] |  |  | 0 |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) | [9],[18] |  |  | (120,000) |  |  |  |  |
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 | [1],[20] |  |  | 0 |  |  |  |  |
Realized Gain (Loss) | [20] |  |  | 3,772,000 |  |  |  |  |
Investment Owned At Fair Value | [20] |  |  | 0 |  |  |  | 1,120,000 |
Gross Additions | [2],[20] |  |  | 0 |  |  |  |  |
Gross reductions | [3],[20] |  |  | (1,000,000) |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) | [20] |  |  | (120,000) |  |  |  |  |
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 | [1],[19] |  |  | 1,047,000 |  |  |  |  |
Realized Gain (Loss) | [19] |  |  | 0 |  |  |  |  |
Investment Owned At Fair Value | [19] |  |  | 2,986,000 |  |  |  | $ 7,747,000 |
Gross Additions | [2],[19] |  |  | 0 |  |  |  |  |
Gross reductions | [3],[19] |  |  | (4,781,000) |  |  |  |  |
Net Change in Unrealized Appreciation (Depreciation) | [19] |  |  | $ 20,000 |  |  |  |  |
Control & Affiliate Investments |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |
Investment cost |  |  |  |  |  | 87,271,000 |  |  |
Investment Owned At Fair Value | [6] |  |  |  |  | $ 76,458,000 |  |  |
[1] | Represents the total amount of interest, fees, or dividends credited to income for the period an investment was an affiliate or control investment.
[2] | Gross additions include increases in the cost basis of investments resulting from new portfolio investments, paid-in-kind interest or dividends, the amortization of discounts and closing fees and the exchange of one or more existing securities for one or more new securities.
[3] | Gross reductions include decreases in the cost basis of investments resulting from principal repayments or sales and the exchange of one or more existing securities for one or more new securities. Gross reductions also include previously recognized depreciation on investments that become control or affiliate investments during the period.
[4] | Represents the total amount of interest, fees, or dividends credited to income for the period an investment was an affiliate or control investment.
[5] | All of the Company’s control and affiliate investments are Level 3 investments valued using significant unobservable inputs.
[6] | All of the Company’s control and affiliate investments are Level 3 investments valued using significant unobservable inputs.
[7] | Gross additions include increases in the cost basis of investments resulting from new portfolio investments, paid-in-kind interest or dividends, the amortization of discounts and closing fees and the exchange of one or more existing securities for one or more new securities.
[8] | Gross reductions include decreases in the cost basis of investments resulting from principal repayments or sales and the exchange of one or more existing securities for one or more new securities. Gross reductions also include previously recognized depreciation on investments that become control or affiliate investments during the period.
[9] | In accordance with Rules 3-09, 4-08(g), and Rule 10-01(b)(1) of Regulation S-X, (“Rule 3-09”, “Rule 4-08(g)”, and “Rule 10-01(b)(1)”, respectively), the Company must determine if its unconsolidated subsidiaries are considered “significant subsidiaries”. As of March 31, 2023 and March 31, 2022, there were no unconsolidated subsidiaries that are considered “significant subsidiaries”.
[10] | Hercules Adviser LLC is a wholly owned subsidiary providing investment management and other services to the Adviser Funds and other External Parties.
[11] | Hercules Adviser LLC is a wholly-owned subsidiary providing investment management and other services to External Parties.
[12] | As of December 31, 2021, the Company's investment in Coronado Aesthetics, LLC became classified as a control investment as a result of obtaining more than 25% of the voting securities of the portfolio company.
[13] | As of December 31, 2021, the Company's investment in Coronado Aesthetics, LLC became classified as a control investment as a result of obtaining more than 25% of the voting securities of the portfolio company.
[14] | As of March 31, 2018, the Company's investment in Gibraltar Acquisition LLC (p.k.a. Gibraltar Business Capital, LLC) became classified as a control investment as a result of obtaining a controlling financial interest.
[15] | As of March 31, 2018, the Company's investment in Gibraltar Business Capital, LLC became classified as a control investment as a result of obtaining a controlling financial interest.
[16] | As of March 31, 2017, the Company's investment in Tectura Corporation became classified as a control investment as of result of obtaining more than 50% representation on the portfolio company's board. In May 2018, the Company purchased common shares, thereby obtaining greater than 25% of voting securities of Tectura as of June 30, 2018.
[17] | As of March 31, 2017, the Company's investment in Tectura Corporation became classified as a control investment as of result of obtaining more than 50% representation on the portfolio company's board. In May 2018, the Company purchased common shares, thereby obtaining greater than 25% of voting securities of Tectura as of June 30, 2018.
[18] | As of September 30, 2022, Black Crow AI, Inc. and Pineapple Energy LLC were no longer affiliates as defined under the 1940 Act.
[19] | As of December 11, 2020, the Company's investment in Pineapple Energy LLC became classified as an affiliate investment as a result of obtaining more than 5% but less than 25% of the voting securities of the portfolio company.
[20] | During the three months ended March 31, 2022, the Company sold its investments in Black Crow AI, Inc., as a result it is no longer an affiliate investment as of March 31, 2022.

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