Note 1. Organization and Summary of Significant Accounting Policies (Detail) (USD $)	2 Months Ended	12 Months Ended
	Mar. 31, 2013	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011	Jan. 31, 2012
Gross Intangible Assets, Reclassified (in Dollars)			$ 22,200,000
Accumulated Amortization, Reclassifications of Intangible Assets (in Dollars)			5,900,000
Restructuring Charges (in Dollars)	300,000	3,264,000
Sales Discounts, Returns and Allowances, Goods (in Dollars)		200,000	100,000	300,000
Inventory Write-down (in Dollars)		7,053,000	8,955,000	488,000
Number of Operating Segments		1
Assets Held-for-sale, Current (in Dollars)		600,000			0
Percentage of Potential Returns Accrued Upon Sale		100.00%
Licenses Revenue (in Dollars)		5,700,000	100,000	0
Deferred Revenue (in Dollars)		3,100,000	400,000
Foreign Currency Transaction Gain (Loss), Realized (in Dollars)		800,000	(600,000)	(200,000)
Subsequent Event [Member]
Restructuring Charges (in Dollars)	300,000
Minimum [Member] | Intellectual Property [Member]
Finite-Lived Intangible Asset, Useful Life		2 years
Minimum [Member]
Property, Plant and Equipment, Useful Life		1 year
Finite-Lived Intangible Asset, Useful Life		2 years
Maximum [Member] | Intellectual Property [Member]
Finite-Lived Intangible Asset, Useful Life		3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life		5 years
Finite-Lived Intangible Asset, Useful Life		10 years
Advertising Expense (in Dollars)		$ 100,000	$ 100,000	$ 100,000