| Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
| Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2022 | Mar. 31, 2021 | Sep. 30, 2021 | |
| Income Tax Disclosure [Abstract] | |||||
| Income tax expense (benefit) | $ 3,277 | $ 972 | $ (3,351) | $ 4,952 | |
| Unrecognized tax benefits | 3,231 | 3,231 | $ 2,807 | ||
| Decrease reasonably possible in next 12 months | 350 | 350 | |||
| Total penalties and interest accrued | $ 775 | $ 775 | $ 691 | ||
| X | ||||||||||
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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
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- References No definition available. 
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| X | ||||||||||
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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