Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
Sep. 30, 2021 |
|
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | |||
Balance at beginning of year | $ 3,358 | $ 3,358 | $ 3,441 |
Additions for tax positions related to current year | 0 | 0 | 0 |
Additions for tax positions related to prior years | 0 | 0 | 0 |
Reductions in tax positions of prior years | 0 | 0 | 0 |
Lapse of statute of limitations | 0 | 0 | (83) |
Balance at end of year | $ 3,358 | $ 3,358 | $ 3,358 |