Note 6 - Intangible Assets - Acquired Intangible Assets, Subject to Amortization (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Aug. 01, 2015	Jan. 31, 2015
Developed Technology Rights [Member]
Gross Value	$ 76,628	$ 76,628
Impairment	(24,614)	(24,614)
Accumulated Amortization and Effect of Currency Translation	(46,632)	(44,604)
Net Value	$ 5,382	$ 7,410
Weighted Average Remaining Amortization Period	1 year 182 days	2 years
Customer Relationships [Member]
Gross Value	$ 50,704	$ 50,704
Impairment	(30,486)	(30,486)
Accumulated Amortization and Effect of Currency Translation	(18,868)	(18,313)
Net Value	$ 1,350	$ 1,905
Weighted Average Remaining Amortization Period	1 year 73 days	1 year 255 days
Trademarks and Other [Member]
Gross Value	$ 5,478	$ 4,078
Impairment
Accumulated Amortization and Effect of Currency Translation	$ (5,080)	$ (3,621)
Net Value	$ 398	$ 457
Weighted Average Remaining Amortization Period	3 years 146 days	3 years 328 days
Purchased IP-Amortizing [Member]
Gross Value	$ 24,706	$ 23,398
Impairment	(5,516)	(5,516)
Accumulated Amortization and Effect of Currency Translation	(17,065)	(15,162)
Net Value	$ 2,125	$ 2,720
Weighted Average Remaining Amortization Period	1 year 255 days	1 year
Acquired Intangible Assets Subtotal [Member]
Gross Value	$ 157,516	$ 154,808
Impairment	(60,616)	(60,616)
Accumulated Amortization and Effect of Currency Translation	(87,645)	(81,700)
Net Value	$ 9,255	$ 12,492
Weighted Average Remaining Amortization Period	1 year 219 days	1 year 292 days
Purchased Intellectual Property - not yet deployed [Member]
Gross Value	$ 16,771	$ 15,877
Impairment	$ (3,727)	$ (3,727)
Accumulated Amortization and Effect of Currency Translation
Net Value	$ 13,044	$ 12,150
Weighted Average Remaining Amortization Period
Gross Value	$ 174,287	$ 170,685
Impairment	(64,343)	(64,343)
Accumulated Amortization and Effect of Currency Translation	(87,645)	(81,700)
Net Value	$ 22,299	$ 24,642
Weighted Average Remaining Amortization Period