Income Tax Expense (Principal Components Of Income Tax Expense (Benefit) From Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Income Tax Expense
Federal, Current	$ 14,807	$ 10,495	$ 13,888
Federal, Deferred	(1,598)	1,311	250
State and local, Current	2,257	1,984	3,039
State and local, Deferred	(786)	(932)	98
Foreign, Current	2,922	2,875	2,439
Foreign, Deferred	(427)	(2,223)	674
Total	$ 17,175	$ 13,510	$ 20,388