Acquisitions - Summary of Unaudited Proforma Results (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Anlin Windows & Doors [Member]
Business Acquisition [Line Items]
Net sales	$ 1,251,314	$ 967,825
Net income	$ 35,273	$ 50,838
Net income per common share attributable to common shareholders:
Basic	$ 0.59	$ 0.86
Diluted	$ 0.59	$ 0.86
New South Window Solutions LLC and New South Window Solutions of Orlando LLC [Member]
Business Acquisition [Line Items]
Net sales		$ 890,373	$ 831,610
Net income		$ 45,338	$ 44,925
Net income per common share attributable to common shareholders:
Basic		$ 0.77	$ 0.77
Diluted		$ 0.76	$ 0.76
ECO [Member]
Business Acquisition [Line Items]
Net sales	$ 1,169,416	$ 945,930
Net income	$ 26,375	$ 39,220
Net income per common share attributable to common shareholders:
Basic	$ 0.44	$ 0.67
Diluted	$ 0.44	$ 0.66