CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net earnings	$ 63,496	$ 99,411	$ 81,039
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	1,496	3,172	(6,474)
Pension plan termination		40,600
Amortization of prior service costs, actuarial losses and other		(3,455)	(5,972)
Total other comprehensive (loss) income, net of tax	1,496	40,317	(12,446)
Comprehensive income	$ 64,992	$ 139,728	$ 68,593