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Quarterly Financial Information (Unaudited) - Summarized Quarterly Financial Results (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Jan. 31, 2015 | Nov. 01, 2014 | Aug. 02, 2014 | May 03, 2014 | Feb. 01, 2014 | Nov. 02, 2013 | Aug. 03, 2013 | May 04, 2013 | Jan. 31, 2015 | Feb. 01, 2014 | Feb. 02, 2013
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total revenue | $ 178,683 us-gaap_SalesRevenueNet | $ 117,198 us-gaap_SalesRevenueNet | $ 103,485 us-gaap_SalesRevenueNet | $ 108,255 us-gaap_SalesRevenueNet | $ 156,073 us-gaap_SalesRevenueNet | $ 106,134 us-gaap_SalesRevenueNet | $ 97,123 us-gaap_SalesRevenueNet | $ 101,233 us-gaap_SalesRevenueNet | $ 507,621 us-gaap_SalesRevenueNet | $ 460,563 us-gaap_SalesRevenueNet | $ 448,365 us-gaap_SalesRevenueNet
Gross profit | 76,670 us-gaap_GrossProfit | 45,752 us-gaap_GrossProfit | 37,873 us-gaap_GrossProfit | 42,602 us-gaap_GrossProfit | 64,632 us-gaap_GrossProfit | 41,135 us-gaap_GrossProfit | 35,643 us-gaap_GrossProfit | 39,406 us-gaap_GrossProfit | 202,897 us-gaap_GrossProfit | 180,816 us-gaap_GrossProfit | 168,616 us-gaap_GrossProfit
Operating income (loss) | 25,182 us-gaap_OperatingIncomeLoss | 1,971 us-gaap_OperatingIncomeLoss | (1,871)us-gaap_OperatingIncomeLoss | 3,359 us-gaap_OperatingIncomeLoss | 20,536 us-gaap_OperatingIncomeLoss | 1,694 us-gaap_OperatingIncomeLoss | (1,074)us-gaap_OperatingIncomeLoss | 2,836 us-gaap_OperatingIncomeLoss | 28,641 us-gaap_OperatingIncomeLoss | 23,992 us-gaap_OperatingIncomeLoss | 21,528 us-gaap_OperatingIncomeLoss
Net income (loss) | $ 15,554 us-gaap_NetIncomeLoss | $ 1,260 us-gaap_NetIncomeLoss | $ (1,055)us-gaap_NetIncomeLoss | $ 2,055 us-gaap_NetIncomeLoss | $ 12,326 us-gaap_NetIncomeLoss | $ 1,008 us-gaap_NetIncomeLoss | $ (577)us-gaap_NetIncomeLoss | $ 1,773 us-gaap_NetIncomeLoss | $ 17,814 us-gaap_NetIncomeLoss | $ 14,530 us-gaap_NetIncomeLoss | $ 13,795 us-gaap_NetIncomeLoss
Earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |
Basic | $ 0.91 us-gaap_EarningsPerShareBasic | $ 0.07 us-gaap_EarningsPerShareBasic | $ (0.06)us-gaap_EarningsPerShareBasic | $ 0.12 us-gaap_EarningsPerShareBasic | $ 0.71 us-gaap_EarningsPerShareBasic | $ 0.06 us-gaap_EarningsPerShareBasic | $ (0.03)us-gaap_EarningsPerShareBasic | $ 0.10 us-gaap_EarningsPerShareBasic | $ 1.03 us-gaap_EarningsPerShareBasic | $ 0.84 us-gaap_EarningsPerShareBasic | $ 0.79 us-gaap_EarningsPerShareBasic
Diluted | $ 0.87 us-gaap_EarningsPerShareDiluted | $ 0.07 us-gaap_EarningsPerShareDiluted | $ (0.06)us-gaap_EarningsPerShareDiluted | $ 0.12 us-gaap_EarningsPerShareDiluted | $ 0.69 us-gaap_EarningsPerShareDiluted | $ 0.06 us-gaap_EarningsPerShareDiluted | $ (0.03)us-gaap_EarningsPerShareDiluted | $ 0.10 us-gaap_EarningsPerShareDiluted | $ 1.00 us-gaap_EarningsPerShareDiluted | $ 0.82 us-gaap_EarningsPerShareDiluted | $ 0.77 us-gaap_EarningsPerShareDiluted

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