Note 16 - Commitments and Contingencies (Details) (USD $)	3 Months Ended		12 Months Ended				0 Months Ended	12 Months Ended		3 Months Ended		12 Months Ended
	Oct. 27, 2012	Apr. 28, 2012	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012	Nov. 02, 2013	Feb. 03, 2014 Subsequent Event [Member] Trident and NXP [Member]	Feb. 01, 2014 Early Termination [Member]	Feb. 01, 2014 Early Termination [Member] Maximum [Member]	Nov. 02, 2013 General and Administrative Expense [Member] Trident and NXP [Member]	Oct. 27, 2012 Second Licensed Technology Audit Settlement [Member]	Feb. 01, 2014 Design Tool Licences [Member]	Feb. 01, 2014 Trident and NXP [Member]
Note 16 - Commitments and Contingencies (Details) [Line Items]
Loss Contingency, Loss in Period								$ 800,000
Loss Contingency Accrual						100,000			100,000
Operating Leases, Rent Expense			4,800,000	4,700,000	2,600,000
Purchase Commitment, Remaining Minimum Amount Committed			17,400,000									11,400,000
Long-term Purchase Commitment, Amount												12,900,000
Contractual Obligation			0
Direct Operating Cost, Royalty Expense			1,900,000	2,700,000	2,000,000
Proceeds from Grantors			5,200,000
Percentage of Royalties			4.50%
Accrued Royalties			1,000,000
Litigation Settlement, Amount	6,300,000	1,400,000					1,400,000						1,800,000
Asset Impairment Charges										400,000
Prepaid Expense and Other Assets, Current			8,069,000	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