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Net Income (Loss) per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
The number of stock options outstanding 203,000 39,000
Net Income (Loss) per Share    
Net income (loss) $ (4,447) $ (4,833)
Average shares outstanding 14,441,000 14,296,000
Net effect of dilutive stock options based on the treasury stock method using average market price 0 0
Totals 14,441,000 14,296,000
Net income (loss) per share - basic $ (0.31) [1] $ (0.34) [1]
Net income (loss) per share - diluted $ (0.31) [1] $ (0.34) [1]
[1] Net loss per common share for the three months ended April 30, 2013 and April 30, 2012 was calculated based on the basic shares outstanding due to the anti-dilutive effect on the inclusion of common stock equivalent shares.