Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Net loss	$ (9,829)	$ (4,268)	$ (29,304)	$ (3,738)
Other comprehensive income, before tax and net of reclassification adjustments:
Foreign currency translation and other gains (losses)	10,135	5,858	6,947	(1,219)
Unrealized gains (losses) on investments	(961)	2,052	159	2,745
Other comprehensive income, before tax	9,174	7,910	7,106	1,526
Tax effect	359	(767)	(59)	(1,026)
Other comprehensive income, net of tax	9,533	7,143	7,047	500
Comprehensive income (loss)	$ (296)	$ 2,875	$ (22,257)	$ (3,238)