Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands |
Sep. 30, 2023 |
Sep. 30, 2022 |
|---|---|---|
| Financial Support for Nonconsolidated Legal Entity [Line Items] | ||
| Unfunded commitments | $ 232,740 | $ 224,239 |
| Debt and Equity Financing | ||
| Financial Support for Nonconsolidated Legal Entity [Line Items] | ||
| Unfunded commitments | 205,600 | 175,200 |
| Drawn amount | 154,200 | |
| JV Financing | ||
| Financial Support for Nonconsolidated Legal Entity [Line Items] | ||
| Unfunded commitments | $ 27,100 | $ 49,000 |