Income Taxes - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) State	Apr. 01, 2017	Dec. 30, 2017 USD ($)
Income Taxes [Line Items]
Unrecognized tax benefits	$ 0.3		$ 0.3
Accrued interest and penalties	$ 0.0		$ 0.0
Effective income tax rate	28.00%	46.80%
State and Local Jurisdiction
Income Taxes [Line Items]
Income tax return examination	In September 2017, the Internal Revenue Service commenced an examination of the Company's 2015 consolidated corporate income tax return. The examination was still in process as of March 31, 2018. The Company's 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