CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 29, 2023	Dec. 30, 2022	Dec. 31, 2021
Income Statement [Abstract]
Net sales		$ 322,415	$ 284,391	$ 230,472
Cost of sales		69,764	61,008	51,835
Gross profit		252,651	223,383	178,637
Selling, general and administrative expenses:
General and administrative		72,319	54,742	44,142
Selling and marketing		107,834	88,856	67,294
Research and development		44,401	35,983	33,862
Total selling, general and administrative expenses		224,554	179,581	145,298
Operating income		28,097	43,802	33,339
Other income (expense), net:
Interest income (expense), net		6,986	2,448	(38)
Loss on foreign currency transactions	[1]	(1,909)	(1,707)	(2,964)
Royalty income		74	804	1,015
Other income (loss), net		448	205	(48)
Total other income (expenses), net		5,599	1,750	(2,035)
Income before income taxes		33,696	45,552	31,304
Provision for income taxes		12,349	5,887	3,793
Net income		$ 21,347	$ 39,665	$ 27,511
Net income per share:
Basic		$ 0.44	$ 0.83	$ 0.58
Diluted		$ 0.43	$ 0.80	$ 0.56
Weighted average shares outstanding:
Basic		48,523	47,987	47,210
Diluted		49,427	49,380	49,456

[1] Shown as a separate line item on the Consolidated Statements of Income.