Summary of Significant Accounting Policies - Components of the Company's investment income (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
Sep. 30, 2023 |
Sep. 30, 2022 |
Dec. 31, 2022 |
|
| Summary of Significant Accounting Policies | |||||
| Interest income | $ 12,804 | $ 12,491 | $ 37,553 | $ 30,602 | |
| PIK interest income | 2,430 | 1,240 | 7,193 | 4,458 | |
| Dividend income | 1,017 | 1,051 | 3,169 | 3,108 | |
| Fee income | (836) | 412 | (356) | 1,604 | |
| Prepayment gain (loss) | 29 | 495 | 378 | 758 | |
| Accretion of discounts and amortization of premiums | 199 | 227 | 857 | 872 | |
| Total investment income | 15,643 | 15,916 | 48,794 | 41,402 | |
| PIK dividends | 117 | $ 124 | 359 | $ 350 | |
| Reversal of previously accrued fee income, associated with IT Global Holding, LLC. | 1,046 | ||||
| Fair value of the Company's investments on non-accrual status | $ 6,155 | $ 6,155 | $ 2,835 | ||