Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Equity
Balance at beginning	$ 245,585
Net earnings	5,543	$ 6,650
Foreign currency translation adjustments	192	(1,092)
Pension liability adjustments	41	$ 73
Balance at ending	$ 248,550
Cash dividends declared (in dollars per share)	$ 0.26	$ 0.25	$ 0.25
Common Stock
Equity
Balance at beginning	$ 9,643	$ 9,497
Stock options exercised, net of shares withheld for employee taxes and strike price	1	11
Shares purchased and retired	(25)
Balance at ending	9,619	9,508
Capital in Excess of Par Value
Equity
Balance at beginning	72,577	71,661
Stock options exercised, net of shares withheld for employee taxes and strike price	(1)	(12)
Share-based compensation expense	427	367
Balance at ending	73,003	72,016
Reinvested Earnings
Equity
Balance at beginning	181,299	180,646
Net earnings	5,543	6,650
Cash dividends declared	(2,506)	(2,377)
Shares purchased and retired	(707)	(5)
Balance at ending	183,629	184,914
Accumulated other comprehensive loss
Equity
Balance at beginning	(17,934)	(17,311)
Foreign currency translation adjustments	192	(1,092)
Pension liability adjustments	41	73
Balance at ending	$ (17,701)	$ (18,330)