Acquisitions - Schedule of Fair Value of Assets and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Feb. 01, 2020	Aug. 13, 2018	Jan. 02, 2021	Dec. 28, 2019
Business Acquisition [Line Items]
Goodwill			$ 329,695	$ 277,600
New South Window Solutions LLC and New South Window Solutions of Orlando LLC [Member]
Business Acquisition [Line Items]
Accounts receivable	$ 8,434
Inventories	2,936
Contract assets, net	4,413
Prepaid expenses and other assets	1,756
Property and equipment	7,433
Operating lease right-of-use asset	10,578
Intangible assets	27,370
Goodwill	52,094
Accounts payable	(6,621)
Accrued and other liabilities	(7,447)
Operating lease liability	(10,578)
Purchase price	90,368
Cash	90,368
Due to Sellers	200
Total fair value of consideration	90,368
New South Window Solutions LLC and New South Window Solutions of Orlando LLC [Member] | Previously Reported [Member]
Business Acquisition [Line Items]
Accounts receivable	10,294
Inventories	3,757
Contract assets, net	4,413
Prepaid expenses and other assets	1,756
Property and equipment	7,423
Operating lease right-of-use asset	10,578
Intangible assets	28,670
Goodwill	46,200
Accounts payable	(6,621)
Accrued and other liabilities	(5,524)
Operating lease liability	(10,578)
Purchase price	90,368
Cash	90,145
Due to Sellers	223
Total fair value of consideration	90,368
New South Window Solutions LLC and New South Window Solutions of Orlando LLC [Member] | Adjustments to Allocation [Member]
Business Acquisition [Line Items]
Accounts receivable	(1,860)		1,900
Inventories	(821)		800
Property and equipment	10
Intangible assets	(1,300)		1,300
Goodwill	5,894		$ 5,900
Accrued and other liabilities	(1,923)
Cash	223
Due to Sellers	$ (223)
Western Window Systems [Member]
Business Acquisition [Line Items]
Accounts receivable		$ 7,338
Inventories		12,580
Contract assets, net		890
Prepaid expenses and other assets		1,190
Property and equipment		15,969
Intangible assets		167,000
Goodwill		169,541
Accounts payable		(5,622)
Accrued and other liabilities		(9,122)
Deferred income tax liabilities		(5,180)
Purchase price		354,584
Cash		354,584
Total fair value of consideration		354,584
Western Window Systems [Member] | Previously Reported [Member]
Business Acquisition [Line Items]
Accounts receivable		7,555
Inventories		12,580
Contract assets, net		890
Prepaid expenses and other assets		1,190
Property and equipment		16,416
Intangible assets		167,000
Goodwill		164,379
Accounts payable		(5,622)
Accrued and other liabilities		(9,175)
Purchase price		355,213
Cash		355,213
Total fair value of consideration		355,213
Western Window Systems [Member] | Adjustments to Allocation [Member]
Business Acquisition [Line Items]
Accounts receivable		(217)
Property and equipment		(447)
Goodwill		5,162
Accrued and other liabilities		53
Deferred income tax liabilities		(5,180)
Purchase price		(629)
Cash		(629)
Total fair value of consideration		$ (629)