Stock Option Plans (Tables)

3 Months Ended

Apr. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price [Table Text Block]

The following table summarizes options granted, exercised and canceled or expired during the three months ended April 30, 2014:

				Weighted		Weighted Average	Aggregate
				Average		Remaining	Intrinsic
				Exercise		Contractual Term	Value
	Shares			Price		(in years)	(in thousands)
Outstanding at January 31, 2014		83,330		$	12.37
Exercised		(75,120	)	$	12.39
Outstanding and exercisable at April 30, 2014		8,210		$	12.18	0.1	$	437