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Portfolio Company Investments - Additional Information (Details) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 USD ($) Investment | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) Investment
Investment Holdings [Line Items] |  |  |
Number of investment portfolio companies | Investment | 75 |  | 70
Number of residual investment porfolio companies | Investment | 13 |  | 8
Aggregate fair value of total portfolio | $ | $ 856,914 |  | $ 719,124
Weighted average effective yield investment percentage | 12.90% |  | 12.30%
Average fully diluted equity ownership percentage | 3.70% |  | 4.70%
Percentage of equity investments held in portfolio companies | 77.30% |  | 82.10%
Purchases of debt and equity investments | $ | $ 267,950 | $ 245,544 |
Proceeds from sales and repayments | $ | $ 128,255 | $ 319,036 |
Number of investments represented more than ten percentage of aggregate investment portfolio | Investment | 0 |  | 0
Debt investments in portfolio companies on non-accrual status | Investment | 3 |  | 1
Pfanstiehl, Inc |  |  |
Investment Holdings [Line Items] |  |  |
Investment | $ | $ 51,796 |  | $ 57,639
Investments as percentage of total assets | 5.70% |  | 6.40%
Maximum |  |  |
Investment Holdings [Line Items] |  |  |
Investment maturity period | 7 years |  |
Minimum |  |  |
Investment Holdings [Line Items] |  |  |
Investment maturity period | 5 years |  |

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