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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Jul. 31, 2012
Jan. 31, 2012
Jul. 31, 2011
Accounts receivable, allowance for doubtful accounts $ 1,550 $ 1,614 $ 994
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 144,869,307 144,633,007 157,524,395
Common shares, shares outstanding 144,869,307 144,633,007 157,524,395