Severance and Exit Costs - Liability activity for Future Forward (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Restructuring Reserve [Roll Forward]
Charge to earnings	$ 219	$ 46	$ 245	$ 72
Future Forward Program
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning balance			0
Charge to earnings	45	$ 0	3,024	$ 0
Cash paid			(2,516)
Restructuring liability, ending balance	$ 508		$ 508