Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0001091171 (http://www.sec.gov/CIK)

Income Tax Disclosure [Abstract]	Period [Axis]
	2015-01-05 - 2016-01-03
Income Tax Disclosure [Abstract]
Expense for incomes taxes [Table Text Block]	Year Ended   January 3, 2016 January 4, 2015 December 29, 2013 Current income tax expense $ 7,215   $ 5,280   $ 2,069 Deferred income tax expense (benefit) (1,637 )   (392 )   1,621 Total income tax expense $ 5,578   $ 4,888   $ 3,690
Reconciliation of statutory Federal income tax to effective tax rate [Table Text Block]	Year Ended   January 3, 2016   January 4, 2015   December 29, 2013 Statutory Federal income tax rate 35.0  %   35.0  %   35.0  % Domestic production activities deduction (1.9 )%   (1.4 )%   (7.8 )% Other, net 1.5  %   (0.2 )%   (1.9 )% Effective tax rate 34.6  %   33.4  %   25.3  %
Major components of deferred tax assets [Table Text Block]	January 3, 2016   January 4, 2015 Deferred tax assets:       Reserves and allowances $ 794   $ 883 Deferred rent 693   782 Inventory 273   248 Stock-based compensation 5,270   5,135 Financing obligation 171   171 Deferred revenue 909   14 Other 781   599 Gross deferred tax assets $ 8,891   $ 7,832 Valuation allowance (214 )   (109 ) Gross deferred tax assets, net of valuation allowance $ 8,677   $ 7,723         Deferred tax liabilities:       Prepaid expenses (343 )   (369 ) Leased building (170 )   (182 ) Property and Equipment (3,075 )   (2,985 ) Gross deferred tax liabilities (3,588 )   (3,536 ) Net deferred tax assets $ 5,089   $ 4,187
Gross unrecognized tax benefits activity [Table Text Block]	Year Ended   January 3, 2016   January 4, 2015   December 29, 2013 Unrecognized tax benefits - beginning balance $ 143   $ 86   $ — Increase related to current year tax positions 73   57   86 Unrecognized tax benefits - ending balance $ 216   $ 143   $ 86