Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Valuation Allowance [Line Items]
Income tax benefit	$ 6,143	$ (703)	$ 5,772	$ 138
Gain on disposal of business, tax			400
Foreign Tax Authority
Valuation Allowance [Line Items]
Deferred tax assets, net	$ 5,900		5,900
Income tax benefit			$ 5,900