Note 11. Goodwill and Other Intangibles (Detail) - Acquired Intangible Assets, Subject to Amortization (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012
Acquired Intangible, Gross Value	$ 174,960	$ 164,352
Acquired Intangible, Impairment	(74,364)	(66,170)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(64,023)	(52,526)
Acquired Intangible, Net Value	36,573	45,656
Developed Technology Rights [Member]
Acquired Intangible, Gross Value	76,995	75,827
Acquired Intangible, Impairment	(24,614)	(24,614)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(34,923)	(28,455)
Acquired Intangible, Net Value	17,458	22,758
Acquired Intangible, Weighted Average remaining amortization period	3 years 219 days	4 years 255 days
Customer Relationships [Member]
Acquired Intangible, Gross Value	51,174	51,174
Acquired Intangible, Impairment	(30,486)	(30,486)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(16,252)	(14,966)
Acquired Intangible, Net Value	4,436	5,722
Acquired Intangible, Weighted Average remaining amortization period	3 years 219 days	4 years 292 days
Trademarks [Member]
Acquired Intangible, Gross Value	2,677	2,677
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(1,982)	(1,805)
Acquired Intangible, Net Value	695	872
Acquired Intangible, Weighted Average remaining amortization period	5 years 328 days	6 years 219 days
Noncompete Agreements [Member]
Acquired Intangible, Gross Value	1,400	1,400
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(1,400)	(1,400)
Purchased IP-Amortizing [Member]
Acquired Intangible, Gross Value	22,866	8,395
Acquired Intangible, Impairment	(5,516)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(9,466)	(5,900)
Acquired Intangible, Net Value	7,884	2,495
Acquired Intangible, Weighted Average remaining amortization period	2 years 146 days	1 year 328 days
Acquired Intangible Assets Subtotal [Member]
Acquired Intangible, Gross Value	155,112	139,473
Acquired Intangible, Impairment	(60,616)	(55,100)
Acquired Intangible, Accumulated Amortization and Effect of Currency Translation	(64,023)	(52,526)
Acquired Intangible, Net Value	30,473	31,847
Acquired Intangible, Weighted Average remaining amortization period	3 years 146 days	4 years 292 days
Purchased Intellectual Property - not yet deployed [Member]
Acquired Intangible, Gross Value	8,778	13,809
Acquired Intangible, Impairment	(2,678)
Acquired Intangible, Net Value	6,100	13,809
In-process Research and Development [Member]
Acquired Intangible, Gross Value	11,070	11,070
Acquired Intangible, Impairment	$ (11,070)	$ (11,070)