Note 14. Commitments and Contingencies (Details) (USD $)	0 Months Ended	3 Months Ended			9 Months Ended			9 Months Ended	3 Months Ended		3 Months Ended				9 Months Ended
	Oct. 27, 2012	Nov. 02, 2013	Oct. 27, 2012	Apr. 28, 2012	Nov. 02, 2013	Oct. 27, 2012	Feb. 02, 2013	Nov. 02, 2013 Early Termination [Member]	Nov. 02, 2013 Early Termination [Member]	Aug. 03, 2013 Early Termination [Member]	Oct. 27, 2012 Second Licensed Technology Audit Settlement [Member]	Aug. 03, 2013 Design Tool Licences [Member]	Nov. 02, 2013 Design Tool Licences [Member]	Jun. 30, 2013 Design Tool Licences [Member]	Nov. 02, 2013 Trident and NXP [Member]
Note 14. Commitments and Contingencies (Details) [Line Items]
Loss Contingency, Estimate of Possible Loss										$ 800,000
Loss Contingency, Loss in Period									800,000
Purchase Commitment, Remaining Minimum Amount Committed		16,600,000			16,600,000								11,900,000
Long-term Purchase Commitment, Amount												12,900,000
Purchase Obligation, Amount Purchased														1,300,000
Purchase Obligation, Remaining Amount														11,600,000
Contractual Obligation		0			0
Direct Operating Cost, Royalty Expense		500,000	300,000		1,600,000	1,500,000
Proceeds from Grantors					5,100,000
Percentage of Royalties		4.50%			4.50%
Accrued Royalties		1,000,000			1,000,000
Litigation Settlement, Amount	6,300,000			1,400,000											1,800,000
Asset Impairment Charges															400,000
Prepaid Expense and Other Assets, Current		8,845,000			8,845,000		13,578,000								1,400,000
Payments for Other Operating Activities											300,000
Licensing Period Under Negotiation			3 years
Licensing Fees Under Negotiation	3,500,000		3,500,000			3,500,000
Loss Contingency Accrual		100,000			100,000
Potential Early Termination Fees								300,000
Monthly Lease Payments								45,000
Operating Leases, Future Minimum Payments Due		$ 10,477,000			$ 10,477,000			$ 1,100,000