Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (6,628)	$ 3,980
Unrecognized tax benefits	3,328		$ 2,807
Decrease reasonably possible in next 12 months	414
Total penalties and interest accrued	$ 808		$ 691