CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 29, 2024	Mar. 31, 2023
Income Statement [Abstract]
Net sales	$ 77,356	$ 73,528
Cost of sales	16,321	15,966
Gross profit	61,035	57,562
Selling, general and administrative expenses:
General and administrative	23,228	18,098
Selling and marketing	26,708	26,354
Research and development	13,380	10,310
Total selling, general and administrative expenses	63,316	54,762
Operating income (loss)	(2,281)	2,800
Other income (expense), net:
Interest income, net	1,529	1,822
Gain (loss) on foreign currency transactions	(2,297)	34
Royalty income	508
Other income, net	330	63
Total other income, net	70	1,919
Income (loss) before income taxes	(2,211)	4,719
Provision for income taxes	1,128	2,009
Net income (loss)	$ (3,339)	$ 2,710
Net income (loss) per share:
Basic	$ (0.07)	$ 0.06
Diluted	$ (0.07)	$ 0.05
Weighted average shares outstanding:
Basic	48,907	48,247
Diluted	48,907	49,500