Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	March 31, 2022
			Total Fair Value		Quoted Prices (Level 1)		Significant Unobservable Inputs (Level 3)
Executive savings plan assets		$	862	$	862	$	—
Equity securities			1,392		1,392		—
Executive savings plan liabilities			(734)		(734)		—
Contingent consideration liability			(4,252)		—		(4,252)
Total		$	(2,732)	$	1,520	$	(4,252)

	September 30, 2021
			Total Fair Value		Quoted Prices (Level 1)		Significant Unobservable Inputs (Level 3)
Executive savings plan assets		$	937	$	937	$	—
Executive savings plan liabilities			(806)		(806)		—
Contingent consideration liability			(4,181)		—		(4,181)
Total		$	(4,050)	$	131	$	(4,181)

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

		Contingent Consideration Agreements
Fair value at September 30, 2021	$	(4,181)
Net adjustments to fair value		(71)
Fair value at March 31, 2022	$	(4,252)