Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 17,933	$ 15,855	$ 48,957	$ 43,608
Other comprehensive loss:
Foreign currency translation adjustments	(5,424)	(2,248)	(13,104)	(155)
Pension and postretirement benefits, net of tax	(16)	4	(16)	9
Comprehensive income	$ 12,493	$ 13,611	$ 35,837	$ 43,462