Note 7 - Intangible Assets (Details) - Acquired Intangible Assets, Subject to Amortization (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Aug. 02, 2014	Feb. 01, 2014
Acquired intangible assets:
Acquired Intangible, Gross Value	$ 167,132	$ 165,760
Acquired Intangible, Accumulated Impairment Charges	(64,085)	(63,632)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(76,980)	(72,348)
Acquired Intangible, Net Value	26,067	29,780
Developed Technology Rights [Member]
Acquired intangible assets:
Acquired Intangible, Gross Value	76,639	76,639
Acquired Intangible, Accumulated Impairment Charges	(24,614)	(24,614)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(42,490)	(40,334)
Acquired Intangible, Net Value	9,535	11,691
Acquired Intangible, Weighted Average Remaining Amortization Period	2 years 146 days	2 years 328 days
Customer Relationships [Member]
Acquired intangible assets:
Acquired Intangible, Gross Value	50,704	50,704
Acquired Intangible, Accumulated Impairment Charges	(30,486)	(30,486)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(17,680)	(17,048)
Acquired Intangible, Net Value	2,538	3,170
Acquired Intangible, Weighted Average Remaining Amortization Period	2 years 73 days	2 years 255 days
Trademarks and Other [Member]
Acquired intangible assets:
Acquired Intangible, Gross Value	4,078	4,078
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(3,561)	(3,502)
Acquired Intangible, Net Value	517	576
Acquired Intangible, Weighted Average Remaining Amortization Period	4 years 146 days	4 years 328 days
Purchased IP-Amortizing [Member]
Acquired intangible assets:
Acquired Intangible, Gross Value	22,998	21,569
Acquired Intangible, Accumulated Impairment Charges	(5,516)	(5,516)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(13,249)	(11,464)
Acquired Intangible, Net Value	4,233	4,589
Acquired Intangible, Weighted Average Remaining Amortization Period	1 year 109 days	1 year 6 months
Acquired Intangible Assets Subtotal [Member]
Acquired intangible assets:
Acquired Intangible, Gross Value	154,419	152,990
Acquired Intangible, Accumulated Impairment Charges	(60,616)	(60,616)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(76,980)	(72,348)
Acquired Intangible, Net Value	16,823	20,026
Acquired Intangible, Weighted Average Remaining Amortization Period	2 years 73 days	2 years 219 days
Purchased Intellectual Property - not yet deployed [Member]
Acquired intangible assets:
Acquired Intangible, Gross Value	12,713	12,770
Acquired Intangible, Accumulated Impairment Charges	(3,469)	(3,016)
Acquired Intangible, Net Value	$ 9,244	$ 9,754