Income Taxes - Components of Income Tax Provision (Benefit) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Current:
Federal	$ 48,293us-gaap_CurrentFederalTaxExpenseBenefit	$ 42,458us-gaap_CurrentFederalTaxExpenseBenefit	$ 37,192us-gaap_CurrentFederalTaxExpenseBenefit
State	2,882	3,105	2,895
Current, Total	51,175us-gaap_CurrentIncomeTaxExpenseBenefit	45,563us-gaap_CurrentIncomeTaxExpenseBenefit	40,087us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
Federal	(597)	249	(2,214)
State	(35)	18	(170)
Deferred, Total	(632)us-gaap_DeferredIncomeTaxExpenseBenefit	267us-gaap_DeferredIncomeTaxExpenseBenefit	(2,384)us-gaap_DeferredIncomeTaxExpenseBenefit
Total	$ 50,543us-gaap_IncomeTaxExpenseBenefit	$ 45,830us-gaap_IncomeTaxExpenseBenefit	$ 37,703us-gaap_IncomeTaxExpenseBenefit

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

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

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

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

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

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