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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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