Income Taxes - Schedule of Effective Income Tax Rate (Detail)	12 Months Ended
Dec. 27, 2017	Dec. 28, 2016	Dec. 30, 2015
Income Tax Disclosure [Abstract]
Statutory federal income tax rate of 35% applied to earnings before income taxes and extraordinary items	35.00%	35.00%	35.00%
TRA expense	(21.40%)	0.40%	0.10%
Revaluation of deferred taxes	(15.80%)	0.00%	0.00%
Change in valuation allowance	10.90%	1.30%	6.50%
WOTC Credit	(2.50%)	(0.80%)	(0.00%)
State tax benefit (net of federal benefit)	0.60%	5.00%	5.10%
State tax credits	0.00%	0.00%	(0.60%)
Other	(1.30%)	0.20%	0.30%
Total	5.50%	41.10%	46.40%

Effective income tax rate reconciliation deductions working opportunity tax credit.

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Effective income tax rate reconciliation tax cost credits.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference, between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, that is attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority interest income (expense), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, change in enacted tax rate, prior year income taxes, change in deferred tax asset valuation allowance, and other adjustments.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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