Income Taxes - Additional Information (Detail) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 26, 2016 USD ($)	Jun. 25, 2016 USD ($) State	Jun. 27, 2015 USD ($)	Dec. 26, 2015 USD ($)
Income Taxes [Line Items]
Unrecognized tax benefits		$ 400		$ 500
Accrued interest and penalties		300		$ 400
Income tax refund resulted from the Protecting Americans from Tax Hikes Act of 2015	$ 12,000	$ 12,000	$ 17,226
State and Local Jurisdiction
Income Taxes [Line Items]
Income tax return examination		The Company's federal and state income tax returns remain subject to examination for three or four years depending on the state's statute of limitations.
Number of states being audited | State		2
State and Local Jurisdiction | Minimum
Income Taxes [Line Items]
Income tax return examination period		3 years
State and Local Jurisdiction | Maximum
Income Taxes [Line Items]
Income tax return examination period		4 years