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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Jul. 31, 2015
Jan. 31, 2015
Jul. 31, 2014
Accounts receivable, allowance for doubtful accounts $ 813 $ 850 $ 1,038
Preferred shares, par value $ 0.0001 $ 0.0001 $ 0.0001
Preferred shares, shares authorized 10,000,000 10,000,000 10,000,000
Preferred shares, shares issued 0 0 0
Common shares, par value $ 0.0001 $ 0.0001 $ 0.0001
Common shares, shares authorized 200,000,000 200,000,000 200,000,000
Common shares, shares issued 125,126,008 130,502,864 134,057,393
Common shares, shares outstanding 125,126,008 130,502,864 134,057,393