Note 13. Commitments and Contingencies (Details) (USD $)	0 Months Ended	3 Months Ended					6 Months Ended
	Oct. 27, 2012	Aug. 03, 2013	Aug. 03, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Aug. 03, 2013	Jul. 28, 2012	Jun. 30, 2013
Note 13. Commitments and Contingencies (Details) [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed		$ 17,600,000	$ 17,600,000				$ 17,600,000
Purchase Obligation		12,900,000	12,900,000				12,900,000
Purchase Obligation, Amount Purchased									1,300,000
Purchase Obligation, Remaining Amount									11,600,000
Cost of Services, Licenses and Maintenance Agreements							12,400,000
Contractual Obligation		0	0				0
Direct Operating Cost, Royalty Expense		600,000			400,000		1,100,000	800,000
Proceeds from Grantors							4,900,000
Percentage of Royalties		4.50%	4.50%				4.50%
Accrued Royalties		800,000	800,000				800,000
Litigation Settlement, Amount	6,300,000		1,800,000			1,400,000
Licensing Period Under Negotiation				3 years
Licensing Fees Under Negotiation	3,500,000			3,500,000
Operating Leases, Future Minimum Payments Due		11,700,000	11,700,000				11,700,000
Early Termination [Member]
Note 13. Commitments and Contingencies (Details) [Line Items]
Potential Early Termination Fees							300,000
Monthly Lease Payments							45,000,000,000
Operating Leases, Future Minimum Payments Due		1,100,000	1,100,000				1,100,000
Second Licensed Technology Audit Settlement [Member]
Note 13. Commitments and Contingencies (Details) [Line Items]
Payments for Other Operating Activities				$ 300,000