Income Taxes - Additional Information (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2017 USD ($)	Jun. 25, 2016	Jul. 01, 2017 USD ($) State	Jun. 25, 2016	Dec. 31, 2016 USD ($)
Income Taxes [Line Items]
Unrecognized tax benefits	$ 0.4		$ 0.4		$ 0.5
Accrued interest and penalties	$ 0.3		$ 0.3		$ 0.3
Effective income tax rate	36.00%	36.00%	29.70%	36.10%
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			1
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