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Subsequent Event
9 Months Ended
Oct. 31, 2012
Subsequent Events [Abstract]  
Subsequent Event
10. Subsequent Event

On December 7, 2012, our Board of Directors declared an annual dividend of $0.02 per share and a special dividend of $0.35 per share. Both the annual dividend and the special dividend are payable on December 31, 2012 to shareholders of record as of December 21, 2012.