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Income Taxes - Narrative (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 30, 2017 USD ($) property	Dec. 30, 2017 USD ($) property	Dec. 31, 2016 USD ($)	Jan. 10, 2018 property	Apr. 01, 2017 property	Jan. 02, 2016 USD ($)
Income Tax Disclosure [Abstract]
Federal statutory income tax rate		35.00%
Reduction in deferred tax asset		$ (28,800)
Adjustment to deferred tax asset valuation allowance		(28,600)
Deferred income tax expense		200
Release of valuation allowance on AMT credits		800
Reclassification of AMT credit carryforward		800
Current income tax expense		100
Partial release of valuation allowance		(53,450)	$ 0
Deferred tax assets, valuation allowance	$ 10,415	$ 10,415	97,552			$ 103,311
Subsequent Event [Line Items]
Number of properties subject to sale-leaseback arrangement | property	3	3			3
Unrecognized tax benefits, if recognized, would reduce effective tax rate	$ 200	$ 200	$ 200
Sales-leaseback of four distribution centers | Subsequent Event
Subsequent Event [Line Items]
Number of properties subject to sale-leaseback arrangement | property				4
Line of Credit | Revolving Credit Facility
Subsequent Event [Line Items]
Revolving credit facility term	5 years

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