Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015	Jan. 02, 2016
Income Taxes [Line Items]
Income tax expense	$ 4,223	$ 6,316	$ 5,077	$ 10,035
Effective tax rates	36.50%	48.20%	36.50%	42.80%
Effective income tax rate reconciliation, change in enacted tax rate, percent	38.80%		38.80%
Income tax expense from reversal of intraperiod income tax allocation		$ 1,600		$ 1,600
Effective tax rates, excluding discrete item of income tax expense		36.00%		36.00%
Proceeds from income tax refunds	$ 2,400
Accounts Payable and Accrued Liabilities [Member]
Income Taxes [Line Items]
Federal income taxes payable	$ 3,100		$ 3,100
Other Current Assets [Member]
Income Taxes [Line Items]
Federal income taxes receivable					$ 3,900