Note 10 - Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	15 Months Ended		3 Months Ended				12 Months Ended
	Oct. 27, 2012	May 03, 2014	Feb. 02, 2013	May 03, 2014 Cost of Sales [Member]	May 04, 2013 Cost of Sales [Member]	May 03, 2014 Selling and Marketing Expense [Member]	Oct. 27, 2012 Second Licensed Technology Audit Settlement [Member]	Feb. 01, 2014 Design Tool Licences [Member]	May 03, 2014 Design Tool Licences [Member]
Note 10 - Commitments and Contingencies (Details) [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed		$ 37.1							$ 10.9
Long-term Purchase Commitment, Amount								12.9
Contractual Obligation		0
Direct Operating Cost, Royalty Expense				0.3	0.5
Proceeds from Grantors		5.2
Percentage of Royalties		4.50%
Accrued Royalties		1.1
Payments for Other Operating Activities							0.3
Licensing Period Under Negotiation	3 years
Licensing Fees Under Negotiation			3.5
Loss Contingency Accrual		0.2
Loss Contingency, Loss in Period						$ 0.1