Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income tax expense	$ 2,943	$ 3,361	$ 8,448	$ 8,109
Federal income tax expense	2,162	2,467	6,205	5,953
State income tax expense	$ 781	$ 894	$ 2,243	$ 2,156