Earnings per share

6 Months Ended

Jul. 31, 2011

Note 6. Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Earnings per share.

	Three Months Ended July 31,		Six Months Ended July 31,
	2011	2010	2011	2010
Basic weighted average number of common shares outstanding	6,863	6,839	6,859	6,838
Dilutive effect of stock options	—	21	—	25
Weighted average number of common shares outstanding assuming full dilution	6,863	6,860	6,859	6,863
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	311	558	241	558
Stock options with an exercise price below the average market price	577	268	647	268