Selected Quarterly Financial Data (Unaudited) - (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Jan. 25, 2015	Oct. 26, 2014	Jul. 27, 2014	Apr. 27, 2014	Jan. 26, 2014	Oct. 27, 2013	Jul. 28, 2013	Apr. 28, 2013	Jan. 25, 2015	Jan. 26, 2014	Jan. 27, 2013
Selected Quarterly Financial Data (in Dollars) [Abstract]
Net sales	$ 130,394us-gaap_SalesRevenueNet	$ 148,890us-gaap_SalesRevenueNet	$ 145,742us-gaap_SalesRevenueNet	$ 132,859us-gaap_SalesRevenueNet	$ 126,534us-gaap_SalesRevenueNet	$ 141,026us-gaap_SalesRevenueNet	$ 165,010us-gaap_SalesRevenueNet	$ 162,407us-gaap_SalesRevenueNet	$ 557,885us-gaap_SalesRevenueNet	$ 594,977us-gaap_SalesRevenueNet	$ 578,827us-gaap_SalesRevenueNet
Gross profit	73,161us-gaap_GrossProfit	89,326us-gaap_GrossProfit	88,221us-gaap_GrossProfit	78,084us-gaap_GrossProfit	53,805us-gaap_GrossProfit	83,411us-gaap_GrossProfit	100,708us-gaap_GrossProfit	97,287us-gaap_GrossProfit	328,792us-gaap_GrossProfit	335,211us-gaap_GrossProfit	314,612us-gaap_GrossProfit
Operating (loss) income	(13,759)us-gaap_OperatingIncomeLoss	22,810us-gaap_OperatingIncomeLoss	22,057us-gaap_OperatingIncomeLoss	11,149us-gaap_OperatingIncomeLoss	(166,717)us-gaap_OperatingIncomeLoss	13,265us-gaap_OperatingIncomeLoss	24,457us-gaap_OperatingIncomeLoss	20,078us-gaap_OperatingIncomeLoss	42,257us-gaap_OperatingIncomeLoss	(108,917)us-gaap_OperatingIncomeLoss	15,589us-gaap_OperatingIncomeLoss
Net income (loss)	$ (15,441)us-gaap_ProfitLoss	$ 17,623us-gaap_ProfitLoss	$ 17,898us-gaap_ProfitLoss	$ 7,867us-gaap_ProfitLoss	$ (210,808)us-gaap_ProfitLoss	$ 12,453us-gaap_ProfitLoss	$ 19,112us-gaap_ProfitLoss	$ 14,777us-gaap_ProfitLoss	$ 27,947us-gaap_ProfitLoss	$ (164,466)us-gaap_ProfitLoss	$ 41,939us-gaap_ProfitLoss
Earnings Per Share, Basic and Diluted [Abstract]
Basic (in dollars per share)	$ (0.23)us-gaap_EarningsPerShareBasic	$ 0.26us-gaap_EarningsPerShareBasic	$ 0.27us-gaap_EarningsPerShareBasic	$ 0.12us-gaap_EarningsPerShareBasic	$ (3.12)us-gaap_EarningsPerShareBasic	$ 0.18us-gaap_EarningsPerShareBasic	$ 0.28us-gaap_EarningsPerShareBasic	$ 0.22us-gaap_EarningsPerShareBasic	$ 0.42us-gaap_EarningsPerShareBasic	$ (2.44)us-gaap_EarningsPerShareBasic	$ 0.64us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ (0.23)us-gaap_EarningsPerShareDiluted	$ 0.26us-gaap_EarningsPerShareDiluted	$ 0.26us-gaap_EarningsPerShareDiluted	$ 0.12us-gaap_EarningsPerShareDiluted	$ (3.12)us-gaap_EarningsPerShareDiluted	$ 0.18us-gaap_EarningsPerShareDiluted	$ 0.28us-gaap_EarningsPerShareDiluted	$ 0.22us-gaap_EarningsPerShareDiluted	$ 0.41us-gaap_EarningsPerShareDiluted	$ (2.44)us-gaap_EarningsPerShareDiluted	$ 0.62us-gaap_EarningsPerShareDiluted
Weighted average number of shares used in computing earnings per share:
Basic (in shares)	66,763	67,162	67,208	67,300	67,523	67,792	67,614	66,956	67,108	67,471	65,809
Diluted (in shares)	66,763	67,654	67,850	67,970	67,523	68,871	69,090	68,579	67,685	67,471	67,472

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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