Fair Value Measurements (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2021	Sep. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 892	$ 766
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(765)	(644)
Business Combination, Contingent Consideration, Liability, Noncurrent	4,147
Fair Value, Net Asset (Liability)	(4,274)	(122)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	73
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements	4,074
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	892	766
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(765)	(644)
Fair Value, Net Asset (Liability)	(127)	(122)
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	4,147
Fair Value, Net Asset (Liability)	$ 4,147	$ 0