| Investments - Summary of Changes in Assets Measured at Fair Value Using Significant Unobservable Inputs (Details) - USD ($)
 | 3 Months Ended | 6 Months Ended | 
| Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Change in unrealized appreciation/depreciation included in earnings related to Level 3 investments still held at reporting date | $ 7,779,026 | $ (1,367,270) | $ 4,888,730 | $ 34,703 | 
| Level 3 |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Ending balance, of Level 3 Assets |  |  | 69,816,062 | 55,096,711 | 
| Total realized gains (losses), net |  |  | (831,891) | 2,152,868 | 
| Total unrealized gains (losses) |  |  | 8,749,945 | (994,541) | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 11,754,635 | 10,799,925 | 
| Repayments and sales of securities |  |  | (3,754,024) | (7,665,887) | 
| Ending balance, of Level 3 Assets | 85,734,727 | 59,389,076 | 85,734,727 | 59,389,076 | 
| Change in unrealized appreciation/depreciation included in earnings related to Level 3 investments still held at reporting date |  |  | 7,620,790 | (701,940) | 
| Level 3 | Caitec |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 283,170 | 36,916 | 
| Level 3 | Clearview Social |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | 10,432 | 
| Repayments and sales of securities |  |  |  | (10,432) | 
| Level 3 | DSD |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | 2,537,765 | 
| Total unrealized gains (losses) |  |  |  | (886,698) | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 31,652 | 
| Repayments and sales of securities |  |  |  | (6,776,699) | 
| Level 3 | FCM |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 22,623 |  | 
| Level 3 | Filterworks |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total unrealized gains (losses) |  |  | (196,226) |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 102,396 | 147,638 | 
| Level 3 | FSS |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 107,619 | 2,320,000 | 
| Repayments and sales of securities |  |  | (34,838) | (250,047) | 
| Level 3 | GoNoodle |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 7,139 | 7,067 | 
| Level 3 | Hilton Displays |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 10,646 | 11,868 | 
| Repayments and sales of securities |  |  |  | (300,000) | 
| Level 3 | Highland |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 61,973 |  | 
| Level 3 | INEA |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 25,392 | 4,315,919 | 
| Level 3 | ITA |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 449,086 | 495,528 | 
| Level 3 | Knoa |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  | (1,229,155) |  | 
| Total unrealized gains (losses) |  |  | 1,129,155 |  | 
| Level 3 | Mattison |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 5,572,902 | 18,716 | 
| Repayments and sales of securities |  |  | (1,894,470) |  | 
| Level 3 | MRES |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 3,210,545 |  | 
| Level 3 | Microcision |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | 58,329 | 
| Repayments and sales of securities |  |  |  | (58,329) | 
| Level 3 | Open Exchange |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total unrealized gains (losses) |  |  |  | (701,940) | 
| Level 3 | Pressure Pro |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total unrealized gains (losses) |  |  | 470,000 |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 37,637 | 3,043,635 | 
| Repayments and sales of securities |  |  | (1,427,452) |  | 
| Level 3 | Social Flow |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | (4,941) | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 4,941 | 
| Level 3 | Somerset |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | (448,717) | 
| Total unrealized gains (losses) |  |  |  | 594,097 | 
| Repayments and sales of securities |  |  |  | (270,380) | 
| Level 3 | Sciaps |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total unrealized gains (losses) |  |  | 5,586,016 |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 5,000 | 
| Level 3 | Seybert |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 1,863,507 | 62,019 | 
| Level 3 | Swanson |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 49,026 | 
| Level 3 | Tilson |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  | 397,264 |  | 
| Total unrealized gains (losses) |  |  | 1,761,000 |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 250,000 | 
| Repayments and sales of securities |  |  | (397,264) |  | 
| Level 3 | Loan investments |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Ending balance, of Level 3 Assets |  |  | 12,417,977 | 14,578,351 | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 6,305,158 | 631,838 | 
| Repayments and sales of securities |  |  | (1,894,470) | (3,171,434) | 
| Ending balance, of Level 3 Assets | 16,828,665 | 12,038,755 | 16,828,665 | 12,038,755 | 
| Level 3 | Loan investments | Caitec |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 283,170 | 36,916 | 
| Level 3 | Loan investments | DSD |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 31,652 | 
| Repayments and sales of securities |  |  |  | (3,171,434) | 
| Level 3 | Loan investments | ITA |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 449,086 | 495,528 | 
| Level 3 | Loan investments | Mattison |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 5,572,902 | 18,716 | 
| Repayments and sales of securities |  |  | (1,894,470) |  | 
| Level 3 | Loan investments | Swanson |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 49,026 | 
| Level 3 | Debt investments |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Ending balance, of Level 3 Assets |  |  | 36,861,525 | 19,582,616 | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 5,077,313 | 8,871,381 | 
| Repayments and sales of securities |  |  | (1,462,290) | (340,047) | 
| Ending balance, of Level 3 Assets | 40,476,548 | 28,113,950 | 40,476,548 | 28,113,950 | 
| Level 3 | Debt investments | FCM |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 22,623 |  | 
| Level 3 | Debt investments | Filterworks |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 102,396 | 147,638 | 
| Level 3 | Debt investments | FSS |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 2,320,000 | 
| Repayments and sales of securities |  |  | (34,838) | (40,047) | 
| Level 3 | Debt investments | GoNoodle |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 7,139 | 7,067 | 
| Level 3 | Debt investments | Hilton Displays |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 10,646 | 11,868 | 
| Repayments and sales of securities |  |  |  | (300,000) | 
| Level 3 | Debt investments | Highland |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 61,973 |  | 
| Level 3 | Debt investments | INEA |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 25,392 | 3,304,154 | 
| Level 3 | Debt investments | MRES |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 2,946,000 |  | 
| Level 3 | Debt investments | Pressure Pro |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 37,637 | 3,013,635 | 
| Repayments and sales of securities |  |  | (1,427,452) |  | 
| Level 3 | Debt investments | Sciaps |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 5,000 | 
| Level 3 | Debt investments | Seybert |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 1,863,507 | 62,019 | 
| Level 3 | Equity investments |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Ending balance, of Level 3 Assets |  |  | 20,536,560 | 20,935,744 | 
| Total realized gains (losses), net |  |  | (831,891) | 2,152,868 | 
| Total unrealized gains (losses) |  |  | 8,749,945 | (994,541) | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 372,164 | 1,296,706 | 
| Repayments and sales of securities |  |  | (397,264) | (4,154,406) | 
| Ending balance, of Level 3 Assets | $ 28,429,514 | $ 19,236,371 | 28,429,514 | 19,236,371 | 
| Level 3 | Equity investments | Clearview Social |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | 10,432 | 
| Repayments and sales of securities |  |  |  | (10,432) | 
| Level 3 | Equity investments | DSD |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | 2,537,765 | 
| Total unrealized gains (losses) |  |  |  | (886,698) | 
| Repayments and sales of securities |  |  |  | (3,605,265) | 
| Level 3 | Equity investments | Filterworks |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total unrealized gains (losses) |  |  | (196,226) |  | 
| Level 3 | Equity investments | FSS |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 107,619 |  | 
| Repayments and sales of securities |  |  |  | (210,000) | 
| Level 3 | Equity investments | INEA |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 1,011,765 | 
| Level 3 | Equity investments | Knoa |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  | (1,229,155) |  | 
| Total unrealized gains (losses) |  |  | 1,129,155 |  | 
| Level 3 | Equity investments | MRES |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  | 264,545 |  | 
| Level 3 | Equity investments | Microcision |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | 58,329 | 
| Repayments and sales of securities |  |  |  | (58,329) | 
| Level 3 | Equity investments | Open Exchange |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total unrealized gains (losses) |  |  |  | (701,940) | 
| Level 3 | Equity investments | Pressure Pro |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total unrealized gains (losses) |  |  | 470,000 |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 30,000 | 
| Level 3 | Equity investments | Social Flow |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | (4,941) | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | 4,941 | 
| Level 3 | Equity investments | Somerset |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  |  | (448,717) | 
| Total unrealized gains (losses) |  |  |  | 594,097 | 
| Repayments and sales of securities |  |  |  | (270,380) | 
| Level 3 | Equity investments | Sciaps |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total unrealized gains (losses) |  |  | 5,586,016 |  | 
| Level 3 | Equity investments | Tilson |  |  |  |  | 
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  | 
| Total realized gains (losses), net |  |  | 397,264 |  | 
| Total unrealized gains (losses) |  |  | 1,761,000 |  | 
| Purchases of securities/changes to securities/non-cash conversions |  |  |  | $ 250,000 | 
| Repayments and sales of securities |  |  | $ (397,264) |  |