Income Taxes - Additional Information (Detail) $ in Thousands	12 Months Ended
	Jan. 03, 2016 USD ($) Store	Dec. 28, 2014 USD ($) Store	Dec. 29, 2013 USD ($)	Dec. 30, 2012 USD ($)
Income Tax Disclosure [Abstract]
Likelihood of benefit being realized upon settlement	Greater than 50 percent
Unrecognized tax benefits	$ 2,115	$ 2,939	$ 3,573	$ 3,472
Unrecognized tax benefits, interest on income taxes expense		100	100
Unrecognized tax benefits that would impact effective tax rate	1,700	1,700	2,100
Unrecognized tax benefits, interest on income taxes accrued	$ 100	$ 700	$ 600
Number of company-owned stores sold | Store	4	14
Deferred tax asset, valuation allowance	$ 300	$ 300
Reversal of interest expense	$ 600