Note 10 - Business Combinations (Details) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended		12 Months Ended		0 Months Ended
	May 04, 2012	Feb. 02, 2013	May 04, 2012 Trident Microsystems, Inc. [Member]	May 04, 2012 Trident Microsystems, Inc. [Member]	Feb. 01, 2014 Trident Microsystems, Inc. [Member]	Feb. 02, 2013 Trident Microsystems, Inc. [Member]	May 03, 2011 Large Computer Manufacturer [Member]
Note 10 - Business Combinations (Details) [Line Items]
Business Combination, Consideration Transferred			$ 38,200,000	$ 38,210,000
Business Combination, Bargain Purchase, Gain Recognized, Amount	1,417,000	1,389,000		1,400,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual					39,100,000	66,600,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual					(9,500,000)	(5,200,000)
Business Combination, Acquisition Related Costs						4,000,000
Payments to Acquire Businesses, Gross							$ 5,000,000