Revenue Recognition and Contracts with Customers - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2020 USD ($)	Sep. 28, 2019 USD ($)	Oct. 03, 2020 USD ($) Segment	Sep. 28, 2019 USD ($)	Dec. 28, 2019 USD ($)
Disaggregation Of Revenue [Line Items]
Number of reportable segments | Segment			2
Net sales	$ 238,033	$ 197,823	$ 661,020	$ 570,130
Contract liabilities	19,500		19,500		$ 7,900
Contract assets, net	24,050		$ 24,050		10,547
Revenue recognition, practical expedient			true
NewSouth Window Solutions [Member]
Disaggregation Of Revenue [Line Items]
Business combination, effective date of acquisition			Feb. 01, 2020
Accrued Liabilities [Member]
Disaggregation Of Revenue [Line Items]
Contract liabilities	18,700		$ 18,700		7,400
Contract Assets, Net [Member]
Disaggregation Of Revenue [Line Items]
Contract liabilities	800		800		$ 500
Western Segment [Member]
Disaggregation Of Revenue [Line Items]
Net sales	34,292	35,931	100,779	105,079
Western Segment [Member] | Volume Products [Member] | Passes at Point in Time [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 12,600	$ 13,800	$ 39,000	$ 40,600