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Consolidated Statements of Comprehensive Loss (Unaudited) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Statement of Other Comprehensive Income [Abstract]    
Net income (loss) $ (4,447) $ (4,833)
Other comprehensive income (loss) 0 0
Comprehensive income (loss) $ (4,447) $ (4,833)