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Income Taxes - Components of Income Tax Benefit (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Provision for income taxes:
Current	$ (905)us-gaap_CurrentIncomeTaxExpenseBenefit	$ 1,761us-gaap_CurrentIncomeTaxExpenseBenefit	$ (452)us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred	(5,927)us-gaap_DeferredIncomeTaxExpenseBenefit	(4,408)us-gaap_DeferredIncomeTaxExpenseBenefit	(3,468)us-gaap_DeferredIncomeTaxExpenseBenefit
Income tax benefit	$ (6,983)us-gaap_IncomeTaxExpenseBenefit	$ (2,647)us-gaap_IncomeTaxExpenseBenefit	$ (3,920)us-gaap_IncomeTaxExpenseBenefit

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.