Note 15. Commitments and Contingencies (Detail) (USD $)	3 Months Ended	12 Months Ended					3 Months Ended
	Oct. 27, 2012	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011	Apr. 28, 2012	Feb. 02, 2012	Feb. 02, 2013 First Licensed Technology Audit Settlement [Member]	Oct. 27, 2012 Second Licensed Technology Audit Settlement [Member]
Operating Leases, Rent Expense		$ 4,700,000	$ 2,600,000	$ 2,600,000
Purchase Commitment, Remaining Minimum Amount Committed		16,700,000
Contractual Obligation		0
Direct Operating Cost, Royalty Expense		2,700,000	2,000,000	3,200,000
Proceeds from Grantors		4,800,000
Percentage of Royalties		4.50%
Accrued Royalties		700,000
Loss Contingency, Settlement Agreement, Consideration	6,300,000				1,400,000
Payments for Other Operating Activities							6,000,000	300,000
Other Accrued Liabilities, Noncurrent		300,000
Licensing Period Under Negotiation	3 years
Licensing Fees Under Negotiation		3,500,000
Liabilities Subject to Compromise, Early Contract Termination Fees		300,000
Monthly Lease Payments		45,000
Operating Leases, Future Minimum Payments Due		$ 1,100,000				$ 14,464,000