Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 30, 2016	Jan. 31, 2015
Deferred tax assets:
Deferred rent	$ 5,165	$ 5,134
Stock-based compensation	3,061	5,127
Accrued expenses	1,366	1,262
Inventories	2,307	2,206
Compensation and benefits	676	630
Capital lease	274	388
Deferred revenue	247	227
Tax credits	161	119
Total deferred tax assets	13,257	15,093
Deferred tax liabilities:
Property and equipment	(8,030)	(8,279)
Prepaid expenses	(684)	(717)
Marketable securities	(15)	(14)
Total deferred tax liabilities	(8,729)	(9,010)
Net deferred tax asset	$ 4,528	$ 6,083