CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 132,410	$ 150,542
Cost of sales	96,142	104,143
Gross profit	36,268	46,399
Research and development expenses	7,806	7,942
Selling, general and administrative expenses	29,023	29,846
Operating income (loss)	(561)	8,611
Interest income (expense), net	(296)	(108)
Other income (expense), net	360	23
Income (loss) before provision for income taxes	(497)	8,526
Provision for income taxes	2,413	1,533
Net income (loss)	$ (2,910)	$ 6,993
Earnings (loss) per share:
Basic (in dollars per share)	$ (0.23)	$ 0.51
Diluted (in dollars per share)	$ (0.23)	$ 0.49
Shares used in computing earnings (loss) per share:
Basic (in shares)	12,812	13,803
Diluted (in shares)	12,812	14,199