CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Statement of Comprehensive Income [Abstract]
Net sales	$ 775,535	$ 803,429	$ 1,528,001	$ 1,563,737
Cost of sales	537,737	549,678	1,058,276	1,072,960
Gross profit	237,798	253,751	469,725	490,777
Operating expenses:
Selling, general and administrative	192,955	198,002	381,553	384,933
Depreciation and amortization	16,959	13,215	32,502	26,160
Share-based compensation	4,210	10,175	8,149	30,452
Total operating expenses	214,124	221,392	422,204	441,545
Income from operations	23,674	32,359	47,521	49,232
Other expenses (income):
Interest expense, net	3,922	5,270	7,828	11,104
Gain on insurance recoveries	(3,970)	0	(3,970)	0
Debt extinguishment and modification costs	0	0	0	198
Total other expenses (income)	(48)	5,270	3,858	11,302
Income before income taxes	23,722	27,089	43,663	37,930
Income tax expense (benefit)	4,082	(2,244)	5,131	(4,045)
Net Income	19,640	29,333	38,532	41,975
Comprehensive income	$ 19,640	$ 29,333	$ 38,532	$ 41,975
Basic earnings per share (in usd per share)	$ 0.21	$ 0.32	$ 0.40	$ 0.47
Diluted earnings per share (in usd per share)	$ 0.20	$ 0.30	$ 0.39	$ 0.43
Weighted average shares outstanding:
Basic (in shares)	95,724	90,800	95,449	90,152
Diluted (in shares)	99,604	98,618	99,587	97,333