Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Income Statement [Abstract]
Net sales	$ 310,635	$ 233,182	$ 598,647	$ 490,912
Cost of goods sold	200,510	154,034	384,002	326,967
Gross profit	110,125	79,148	214,645	163,945
Selling, general and administrative expenses	69,517	61,525	132,386	121,260
Income from operations	40,608	17,623	82,259	42,685
Other income (expense), net	90	(297)	54	2,334
Income before income taxes	40,698	17,326	82,313	45,019
Provision for income taxes	9,080	3,441	17,965	8,359
Net income	$ 31,618	$ 13,885	$ 64,348	$ 36,660
Earnings per share:
Basic	$ 0.99	$ 0.43	$ 2.01	$ 1.13
Diluted	$ 0.99	$ 0.43	$ 2.00	$ 1.13
Weighted average shares outstanding:
Basic	31,942	32,269	31,995	32,312
Diluted	32,089	32,338	32,136	32,388