Income Taxes Summary of tax effects of temporary differences (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Income Tax Disclosure [Abstract]
Accrued payroll and benefits	$ 6,431	$ 6,652
Capitalized inventory costs	139	118
Accrued expenses	3,145	3,068
Intangible assets	1,333	2,005
Net operating loss carryforwards	8,210	8,755
Deferred rent	4,844	4,852
Vendor Allowances	2,453	2,344
Other Temporary Differences	2,583	2,592
Deferred Tax Assets, Gross	29,138	30,386
Valuation Allowances and Reserves, Balance	(6,209)	(6,807)	$ (3,884)	$ (1,692)
Deferred Tax Assets, Valuation Allowance	(22,929)	(23,579)
Prepaid expenses	(2,007)	(2,474)
Fixed assets	(14,257)	(12,579)
Federal effect of state and foreign deferred items	(1,512)	(1,672)
Non-current Other	(1,101)	(1,024)
Deferred Tax Liabilities, Gross	(18,877)	(17,749)
Deferred Tax Assets, Net	$ 4,052	$ 5,830