Schedule II (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 25, 2015		Jan. 26, 2014		Jan. 27, 2013
Allowance for Trade Receivables [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	$ 848		$ 1,804		$ 973
Valuation Allowances and Reserves, Charged to Cost and Expense	2,837	[1]	309	[1]	1,139	[1]
Valuation Allowances and Reserves, Deductions	(793)	[1]	(1,265)	[1]	(308)	[1]
Valuation Allowances and Reserves, Balance	2,892		848		1,804
Allowance for Sales Returns [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	14,111		14,790		13,881
Valuation Allowances and Reserves, Charged to Cost and Expense	12,427	[2]	15,881	[2]	16,533	[2]
Valuation Allowances and Reserves, Deductions	(12,447)	[3]	(16,560)	[3]	(15,624)	[3]
Valuation Allowances and Reserves, Balance	14,091		14,111		14,790
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	244,487		224,774		212,285
Valuation Allowances and Reserves, Charged to Cost and Expense	16,498	[4]	19,713	[4]	12,489	[4]
Valuation Allowances and Reserves, Deductions	0		0		0
Valuation Allowances and Reserves, Balance	$ 260,985		$ 244,487		$ 224,774

[1] Additions represent allowance for doubtful accounts charged to expense and deductions represent amounts recorded as reduction to expense upon reassessment of allowance for doubtful accounts at period end.

[2] Represents allowance for sales returns estimated at the time revenue is recognized primarily based on historical return rates and is charged as a reduction to revenue.

[3] Represents allowance for sales returns written off.

[4] Represents change in valuation allowance primarily related to state and certain foreign deferred tax assets that management has determined not likely to be realized due, in part, to projections of future taxable income of the respective jurisdictions.