Share Based Compensation (Tables)

3 Months Ended

Apr. 30, 2013

Share-based Compensation [Abstract]

Weighted average assumptions by grant year

The fair values of options granted during the three months ended April 30, 2013 and April 30, 2012 were estimated using the following assumptions:

	Three Months Ended
	April 30, 2013		April 30, 2012
Risk-free interest rate	0.59	%	0.86	%
Expected dividend yield	1.46	%	1.33	%
Expected volatility factor	41.39	%	49.65	%
Expected option term (in years)	3.75		3.75