Revenue Recognition and Contracts with Customers - Net Sales by Reporting Segment, Product Category and Market (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2020	Jun. 29, 2019	Jul. 04, 2020	Jun. 29, 2019
Disaggregation Of Revenue [Line Items]
Net sales	$ 202,783	$ 198,570	$ 422,987	$ 372,307
Southeast Segment [Member]
Disaggregation Of Revenue [Line Items]
Net sales	172,859	161,483	356,500	303,159
Western Segment [Member]
Disaggregation Of Revenue [Line Items]
Net sales	29,924	37,087	66,487	69,148
Impact-Resistant Windows and Door Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	144,100	137,700	297,700	257,300
Non-Impact Window and Door Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	58,700	60,900	125,300	115,000
New Construction [Member]
Disaggregation Of Revenue [Line Items]
Net sales	94,000	97,600	203,100	185,900
Repair and Remodel [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 108,800	$ 101,000	$ 219,900	$ 186,400