Schedule II (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 26, 2014		Jan. 27, 2013		Jan. 29, 2012
Allowance for Trade Receivables [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	$ 1,804		$ 973		$ 789
Valuation Allowances and Reserves, Charged to Cost and Expense	319	[1]	1,216	[1]	449	[1]
Valuation Allowances and Reserves, Deductions	(1,275)	[1]	(385)	[1]	(265)	[1]
Valuation Allowances and Reserves, Balance	848		1,804		973
Allowance for Sales Returns [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	14,790		13,881		15,049
Valuation Allowances and Reserves, Charged to Cost and Expense	20,703	[2]	17,627	[2]	25,331	[2]
Valuation Allowances and Reserves, Deductions	(21,382)	[3]	(16,718)	[3]	(26,499)	[3]
Valuation Allowances and Reserves, Balance	14,111		14,790		13,881
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	224,774		212,285		148,016
Valuation Allowances and Reserves, Charged to Cost and Expense	19,713	[4]	12,489	[4]	64,269	[4]
Valuation Allowances and Reserves, Deductions	0		0		0
Valuation Allowances and Reserves, Balance	$ 244,487		$ 224,774		$ 212,285

[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.