Bonus depreciation and operating loss carryforwards expiration year.

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Bonus depreciation and state research credits expiration year.

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Deferred tax assets state bonus depreciation and net operating loss carryforwards.

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Estimated Unamortized Tax Deductible Goodwill

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Goodwill For Tax Purposes Amortization Period

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Income taxes.

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Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

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Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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Amount of assets acquired at the acquisition date.

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Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Income Taxes - Additional Information (Detail) - USD ($)			12 Months Ended
	Feb. 01, 2020	Aug. 13, 2018	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Income Taxes [Line Items]
Bonus depreciation and operating loss carryforwards			$ 2,606,000	$ 1,705,000
Bonus depreciation and operating loss carryforwards, expiration date				2025
Bonus depreciation and state research credits, expiration date				2034
Valuation allowance			$ 0	$ 0
Internal Revenue Service (IRS) [Member] \| Earliest Tax Year [Member]
Income Taxes [Line Items]
Open tax years for examination			2014
Internal Revenue Service (IRS) [Member] \| Latest Tax Year [Member]
Income Taxes [Line Items]
Open tax years for examination			2020
ASU 2016-09 [Member]
Income Taxes [Line Items]
Excess tax benefit			$ 800,000	2,100,000	$ 5,200,000
State [Member]
Income Taxes [Line Items]
Bonus depreciation and operating loss carryforwards				1,700,000
CGI [Member]
Income Taxes [Line Items]
Goodwill deductible for tax purpose			9,300,000
Deferred tax asset and liability			$ 0
Goodwill remaining amortization period for tax purposes			7 years 4 months 24 days
Unamortized goodwill			$ 1,500,000	2,700,000
WinDoor [Member]
Income Taxes [Line Items]
Goodwill deductible for tax purpose			38,900,000
Unamortized goodwill			26,100,000	28,700,000
US Impact Systems Inc. [Member]
Income Taxes [Line Items]
Goodwill deductible for tax purpose			569,000
Unamortized goodwill			402,000	440,000
Western Window Systems [Member]
Income Taxes [Line Items]
Goodwill deductible for tax purpose		$ 139,600,000
Unamortized goodwill			$ 112,100,000	121,000,000.0
Business combination, effective date of acquisition		Aug. 13, 2018
Step-up acquisition of goodwill percentage			81.94%
Acquisition of assets and assumption of liabilities			$ 133,600,000
Western Window Systems [Member] \| Western Window Systems Blocker LLC [Member]
Income Taxes [Line Items]
Unamortized goodwill			$ 4,800,000	$ 5,300,000
Step-up acquisition of goodwill percentage			18.06%
Acquisition of assets and assumption of liabilities			$ 6,000,000.0
New South Window Solutions LLC and New South Window Solutions of Orlando LLC [Member]
Income Taxes [Line Items]
Goodwill deductible for tax purpose			52,100,000
Unamortized goodwill			$ 48,900,000
Business combination, effective date of acquisition	Feb. 01, 2020