Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Comprehensive Income
Net earnings	$ 7,445	$ 4,053
Foreign currency translation adjustments	(306)	521
Pension liability, net of tax of $57, $64, $171, and $193, respectively	99	154
Total comprehensive income	7,238	4,728
Pension liability, net of tax	$ 35	$ 54