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Subsequent Events	12 Months Ended
Subsequent Events	Jan. 31, 2013
Subsequent Event [Line Items]
Subsequent Events [Text Block]	21. Subsequent Events On March 7, 2013, the Board of Directors announced the adoption of a dividend policy under which we intend to pay an annual cash dividend of $0.18 per share of common stock. The first dividend of $0.045 per share of outstanding common stock will be paid to shareholders of record as of the close of business on March 22, 2013, with a payment date of April 10, 2013. Future declarations of quarterly dividends and the establishment of future record and payment dates are subject to the quarterly determination of our Board of Directors.