Geographic Information And Concentrations Of Risk (Net Sales Activity By Geographic Region) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 29, 2012	Oct. 30, 2011	Jul. 31, 2011	May 01, 2011	Jan. 30, 2011	Oct. 31, 2010	Aug. 01, 2010	May 02, 2010	Jan. 29, 2012	Jan. 30, 2011	Jan. 31, 2010
Geographic Information And Concentration Of Risk [Line Items]
Total Net Sales	$ 104,032	$ 123,944	$ 130,254	$ 122,371	$ 116,270	$ 123,125	$ 113,227	$ 101,880	$ 480,601	$ 454,502	$ 286,560
Total Net Sales, Percentage									100.00%	100.00%	100.00%
North America [Member]
Geographic Information And Concentration Of Risk [Line Items]
Total Net Sales									114,552	112,404	72,818
Total Net Sales, Percentage									24.00%	25.00%	25.00%
Asia-Pacific [Member]
Geographic Information And Concentration Of Risk [Line Items]
Total Net Sales									298,477	272,079	165,880
Total Net Sales, Percentage									62.00%	60.00%	58.00%
Europe [Member]
Geographic Information And Concentration Of Risk [Line Items]
Total Net Sales									$ 67,572	$ 70,019	$ 47,862
Total Net Sales, Percentage									14.00%	15.00%	17.00%