Quarterly Financial Information (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Summarized quarterly financial results
Total revenue	$ 162,885	$ 96,688	$ 91,004	$ 97,788	$ 149,110	$ 97,071	$ 89,701	$ 94,403	$ 448,365	$ 430,285	$ 415,300
Gross profit	66,134	34,019	29,994	38,469	64,128	36,133	30,845	38,088	168,616	169,194	170,536
Operating income (loss)	23,056	(746)	(3,952)	3,170	24,055	1,924	(640)	5,166	21,528	30,505	41,974
Net income (loss)	$ 14,253	$ (416)	$ (1,997)	$ 1,955	$ 15,178	$ 1,247	$ (480)	$ 3,170	$ 13,795	$ 19,115	$ 26,431
Earnings (loss) per share:
Basic	$ 0.83	$ (0.02)	$ (0.11)	$ 0.11	$ 0.80	$ 0.06	$ (0.02)	$ 0.16	$ 0.79	$ 0.97	$ 1.33
Diluted	$ 0.82	$ (0.02)	$ (0.11)	$ 0.10	$ 0.78	$ 0.06	$ (0.02)	$ 0.15	$ 0.77	$ 0.95	$ 1.28