Consolidated Statements of (Loss) Earnings - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales	$ 512,925	$ 424,066	$ 468,999
Cost of goods sold	328,306	285,003	311,424
Gross margin	184,619	139,063	157,575
Selling, general and administrative expenses	82,597	67,787	70,408
Research and development expenses	23,856	24,317	25,967
Restructuring charges	1,687	1,830	7,448
Gain on sale of assets	0	0	(63)
Operating earnings	76,479	45,129	53,815
Other (expense) income:
Interest expense	(2,111)	(3,272)	(2,648)
Interest income	840	1,047	1,737
Other (expense) income	(136,088)	2,575	(2,638)
Total other (expense) income, net	(137,359)	350	(3,549)
(Loss) earnings before taxes	(60,880)	45,479	50,266
Income tax (benefit) expense	(19,014)	10,793	14,120
Net (loss) earnings	$ (41,866)	$ 34,686	$ 36,146
Net (loss) earnings per share:
Basic	$ (1.30)	$ 1.07	$ 1.11
Diluted	$ (1.30)	$ 1.06	$ 1.09
Basic weighted-average common shares outstanding	32,327	32,317	32,700
Effect of dilutive securities		267	405
Diluted weighted-average common shares outstanding	32,327	32,584	33,105
Cash dividends declared per share	$ 0.16	$ 0.16	$ 0.16