Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Sep. 30, 2025 |
|---|---|---|
| Financial Support for Nonconsolidated Legal Entity [Line Items] | ||
| Unfunded commitments | $ 235,375 | $ 286,047 |
| Debt and Equity Financing | ||
| Financial Support for Nonconsolidated Legal Entity [Line Items] | ||
| Unfunded commitments | 208,300 | 258,900 |
| Amount which can be drawn immediately | 246,900 | |
| JV Financing | ||
| Financial Support for Nonconsolidated Legal Entity [Line Items] | ||
| Unfunded commitments | $ 27,100 | $ 27,100 |