CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 542,751	$ 601,602	$ 614,680
Cost of sales	390,459	428,586	438,424
Gross profit	152,292	173,016	176,256
Research and development expenses	32,452	30,917	31,450
Selling, general and administrative expenses	105,292	118,846	107,539
Operating income	14,548	23,253	37,267
Interest income (expense), net	(2,200)	(566)	(1,422)
Loss on sale of Argentina subsidiary	0	(6,050)	0
Accrued social insurance adjustment	0	0	9,464
Other income (expense), net	(955)	(557)	(1,404)
Income before provision for income taxes	11,393	16,080	43,905
Provision for income taxes	10,986	10,779	5,333
Net income	$ 407	$ 5,301	$ 38,572
Earnings per share:
Basic (in dollars per share)	$ 0.03	$ 0.39	$ 2.78
Diluted (in dollars per share)	$ 0.03	$ 0.39	$ 2.72
Shares used in computing earnings per share:
Basic (in shares)	12,703	13,465	13,893
Diluted (in shares)	12,779	13,742	14,166