XML 25 R22.htm IDEA: XBRL DOCUMENT v2.4.0.6
Earnings per share (Tables)
6 Months Ended
Jul. 31, 2012
Earnings Per Share [Abstract]  
Earnings per share [Table Text Block]
 
Three Months Ended July 31,
Six Months Ended July 31,
 
2012

2011

2012

2011

Basic weighted average number of common shares outstanding
6,923

6,863

6,919

6,859

Dilutive effect of stock options
0

0

0

0

Weighted average number of common shares outstanding assuming full dilution
6,923

6,863

6,919

6,859

 
 
 
 
 
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
497

311

494

241

 
 
 
 
 
Stock options with an exercise price below the average market price
467

577

470

647