CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023
Income Statement [Abstract]
Net sales	$ 99,005	$ 92,306	$ 176,361	$ 165,834
Cost of sales	20,593	21,580	36,914	37,546
Gross profit	78,412	70,726	139,447	128,288
Selling, general and administrative expenses:
General and administrative	23,641	18,097	46,869	36,195
Selling and marketing	28,819	32,277	55,527	58,631
Research and development	14,054	11,755	27,434	22,065
Total selling, general and administrative expenses	66,514	62,129	129,830	116,891
Operating income	11,898	8,597	9,617	11,397
Other income (expense), net:
Interest income, net	1,422	1,775	2,951	3,597
Loss on foreign currency transactions	(3,049)	(1,890)	(5,346)	(1,856)
Royalty income			508
Other income, net	63	10	393	73
Total other income (expense), net	(1,564)	(105)	(1,494)	1,814
Income before income taxes	10,334	8,492	8,123	13,211
Provision for income taxes	2,955	2,428	4,083	4,437
Net income	$ 7,379	$ 6,064	$ 4,040	$ 8,774
Net income per share:
Basic	$ 0.15	$ 0.13	$ 0.08	$ 0.18
Diluted	$ 0.15	$ 0.12	$ 0.08	$ 0.18
Weighted average shares outstanding:
Basic	49,127	48,418	49,018	48,333
Diluted	49,811	49,516	49,529	49,524