Goodwill And Intangible Assets (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2013
Goodwill [Roll Forward]
Balance as of February 1, 2012 (as restated)	$ 96,793
Goodwill acquired during the year	122,640
Foreign currency translation adjustment	5,612
Balance as of January 31, 2013	225,045
Americas
Goodwill [Roll Forward]
Balance as of February 1, 2012 (as restated)	2,966
Goodwill acquired during the year	0
Foreign currency translation adjustment	0
Balance as of January 31, 2013	2,966
Europe
Goodwill [Roll Forward]
Balance as of February 1, 2012 (as restated)	93,827
Goodwill acquired during the year	122,640
Foreign currency translation adjustment	5,612
Balance as of January 31, 2013	$ 222,079