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Dividends	3 Months Ended
Dividends	Apr. 30, 2013
Dividends [Abstract]
Dividends	DIVIDENDS Dividends paid during the three months ended April 30, 2013 were $4,361, or 12.0 cents per share. Dividends paid during the three months ended April 30, 2012 were $3,806, or 10.5 cents per share.