Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 925		$ 925		$ 783
Debt Securities, Trading	4,444		4,444
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(793)		(793)		(657)
Business Combination, Contingent Consideration, Liability, Noncurrent					(4,465)
Fair Value, Net Asset (Liability)	17,624		17,624		(4,339)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings			$ (35)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Contingent consideration
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements			$ (4,500)
Equity Securities, FV-NI, Current	13,048		13,048
Equity Securities, FV-NI, Unrealized Gain (Loss)	(1,852)	$ 0	(1,852)	$ 0
Debt Securities, Trading, Unrealized Gain (Loss)	(57)	0	62	0
Debt and Equity Securities, Unrealized Gain (Loss)	0	$ (1,909)	0	$ (1,790)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	925		925		783
Debt Securities, Trading	4,444		4,444
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(793)		(793)		(657)
Fair Value, Net Asset (Liability)	17,624		17,624		126
Equity Securities, FV-NI, Current	13,048		13,048
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	0		0		(4,465)
Fair Value, Net Asset (Liability)	$ 0		$ 0		$ (4,465)