Revenue Recognition and Contracts with Customers - Adjustment to Accumulated Deficit (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
	Dec. 31, 2017	Jan. 02, 2021	Oct. 03, 2020	Jul. 04, 2020	Apr. 04, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Disaggregation Of Revenue [Line Items]
Net sales		$ 221,601	$ 238,033	$ 202,783	$ 220,204	$ 174,826	$ 197,823	$ 198,570	$ 173,737	$ 882,621	$ 744,956	$ 698,493
Cost of sales										561,297	484,588	455,025
Selling, general and administrative expenses										224,386	176,312	150,910
Income tax expense										11,884	12,439	11,272
Net income		$ 9,987	$ 17,322	$ 2,199	$ 15,600	$ 3,280	$ 15,106	$ 17,045	$ 8,257	$ 45,108	$ 43,688	$ 53,933
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2014-09 [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 8,704
Cost of sales	(5,642)
Selling, general and administrative expenses	(532)
Income tax expense	(647)
Net income	$ 1,883