Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements Of Comprehensive Loss

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Condensed Consolidated Statements Of Comprehensive Loss (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 30, 2012
Apr. 30, 2011
Condensed Consolidated Statements Of Comprehensive Loss [Abstract]    
Net loss $ (20,228) $ (6,754)
Other comprehensive loss:    
Unrealized gains on marketable securities, net 3  
Other comprehensive loss: (20,225) (6,754)
Total comprehensive loss $ (20,225) $ (6,754)