Earnings per share

3 Months Ended

Apr. 30, 2012

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Earnings per share.

	Three Months Ended April 30,
	2012	2011
Basic weighted average number of common shares outstanding	6,915	6,855
Dilutive effect of stock options	—	—
Weighted average number of common shares outstanding assuming full dilution	6,915	6,855
Stock options not included in the computation of diluted earnings per share of common stock because the option exercise prices exceeded the average market prices of the common shares	303	257
Stock options with an exercise price below the average market price	519	511