Supporting Financial Information - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2022	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest expense (a)									$ 1,551	$ 2,992
Amortization of deferred financing costs (b)									664	792
Interest expense	$ 477	$ 512	$ 554	$ 672	$ 808	$ 893	$ 1,004	$ 1,080	$ 2,215	$ 3,784