Equity - Schedule of Stock-based Compensation Expense - by Award Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 1,713	$ 1,523	$ 4,982	$ 3,755
RSUs and RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,113	692	2,869	1,795
PSUs and PRSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	517	708	1,818	1,602
Outside director equity awards and fees in common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 83	$ 123	$ 295	$ 358