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Treasury Stock	9 Months Ended
Treasury Stock	Oct. 31, 2017
Equity [Abstract]
Treasury Stock	Treasury Stock In April 2013, the Company’s Board of Directors authorized the repurchase of up to 1.0 million shares of the Company’s common stock through December 31, 2014. The Company purchased a total of 1.0 million shares under this program, representing the total amount of shares authorized for repurchase. These shares are reflected as treasury stock in the accompanying financial statements.