Fair Value Measurements (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2022	Sep. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 862	$ 937
Investments, Fair Value Disclosure	1,392
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(734)	(806)
Business Combination, Contingent Consideration, Liability, Noncurrent	(4,252)	(4,181)
Fair Value, Net Asset (Liability)	2,732	4,050
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	(71)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	862	937
Investments, Fair Value Disclosure	1,392
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(734)	(806)
Fair Value, Net Asset (Liability)	(1,520)	(131)
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Noncurrent	(4,252)	(4,181)
Fair Value, Net Asset (Liability)	$ (4,252)	$ 4,181