CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Net sales	$ 368,288	$ 394,879	$ 420,457
Cost of sales	261,827	280,885	322,897
Gross profit	106,461	113,994	97,560
Research and development expenses	26,269	29,723	31,281
Selling, general and administrative expenses	85,375	91,811	98,490
Factory restructuring charges (Note 13)	1,221	3,585	4,015
Legal judgment (Note 13)	0	4,172	0
Goodwill impairment (Note 7)	0	0	49,075
Operating loss	(6,404)	(15,297)	(85,301)
Interest expense, net	(935)	(3,361)	(4,332)
Other income (expense), net	(4,621)	60	(2,621)
Loss before provision for income taxes	(11,960)	(18,598)	(92,254)
Provision for income taxes	6,639	5,431	5,984
Net loss	$ (18,599)	$ (24,029)	$ (98,238)
Earnings (loss) per share:
Basic (in dollars per share)	$ (1.41)	$ (1.85)	$ (7.64)
Diluted (in dollars per share)	$ (1.41)	$ (1.85)	$ (7.64)
Shares used in computing earnings (loss) per share:
Basic (in shares)	13,172	12,959	12,855
Diluted (in shares)	13,172	12,959	12,855