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Earnings per share
 3 Months Ended
Apr. 30, 2015
Earnings Per Share [Abstract]  
Earnings per share [Text Block]
Earnings per share.
 
Three Months Ended April 30,
 
2015

2014

Basic weighted average common shares outstanding
7,252

7,177

Dilutive effect of equity compensation plans
—

138

Weighted average common shares outstanding assuming full dilution
7,252

7,315

 
 
 
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
643

160

 
 
 
Stock options with an exercise price below the average market price
106

547