CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Net sales	$ 97,665	$ 90,452	$ 189,991	$ 182,352
Cost of sales	68,469	64,500	134,712	130,412
Gross profit	29,196	25,952	55,279	51,940
Research and development expenses	6,959	7,520	14,190	15,341
Selling, general and administrative expenses	21,229	21,330	43,835	45,341
Factory restructuring charges (Note 12)	0	1,555	0	2,619
Operating income (loss)	1,008	(4,453)	(2,746)	(11,361)
Interest income (expense), net	(358)	(843)	(711)	(1,765)
Other income (expense), net	(1,751)	(89)	(1,699)	(169)
Income (loss) before provision for income taxes	(1,101)	(5,385)	(5,156)	(13,295)
Provision for income taxes	1,811	2,808	4,030	3,547
Net income (loss)	$ (2,912)	$ (8,193)	$ (9,186)	$ (16,842)
Earnings (loss) per share:
Basic (in dollars per share)	$ (0.22)	$ (0.63)	$ (0.70)	$ (1.30)
Diluted (in dollars per share)	$ (0.22)	$ (0.63)	$ (0.70)	$ (1.30)
Shares used in computing earnings (loss) per share:
Basic (in shares)	13,200	12,917	13,141	12,909
Diluted (in shares)	13,200	12,917	13,141	12,909