Significant accounting policies Net loss per common share (Tables)

12 Months Ended

Jan. 31, 2013

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Basic weighted average number of common shares outstanding	2012		2011
Basic weighted average number of common shares outstanding	6,922		6,878
Dilutive effect of stock options	—		—
Weighted average number of common shares outstanding assuming full dilution	6,922		6,878
Weighted average number of stock options not included in the computation of diluted EPS of common stock because the option exercise prices exceeded the average market prices	783		653
Canceled options during the year	(36	)	(28	)
Stock options with an exercise price below the average stock price	186		190