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Dividends	9 Months Ended
Dividends	Oct. 31, 2013
Dividends [Abstract]
Dividends	DIVIDENDS Dividends paid during the three and nine months ended October 31, 2013 were $4,367 and $13,094, respectively, or 12.0 cents and 36.0 cents per share, respectively. Dividends paid during the three and nine months ended October 31, 2012 were $3,812 and $11,430, respectively, or 10.5 cents and 31.5 cents per share, respectively.