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Condensed Consolidated Statements of Operation (Unaudited) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Oct. 31, 2011
Oct. 31, 2010
Oct. 31, 2011
Oct. 31, 2010
Condensed Consolidated Statements of Operation [Abstract]        
Net sales $ 53,074 $ 60,779 $ 140,147 $ 158,002
Costs of goods sold 37,033 43,586 97,446 111,566
Gross profit 16,041 17,193 42,701 46,436
Selling, general and administrative expenses and others 14,966 17,063 43,616 47,194
Restructuring expense 3,901   3,901  
Interest expense 298 253 905 881
Loss before income taxes (3,124) (123) (5,721) (1,639)
Provision for income taxes (income tax benefits) 175 (277) 246 (749)
Net (loss) income $ (3,299) $ 154 $ (5,967) $ (890)
Dividend declared        
Cash   $ 0.05 $ 0.05 $ 0.10
Net (loss) income per common share        
Basic $ (0.23) [1] $ 0.01 $ (0.42) [2] $ (0.06) [2]
Diluted $ (0.23) [1] $ 0.01 $ (0.42) [2] $ (0.06) [2]
Weighted average shares outstanding        
Basic 14,285 14,152 14,241 14,123
Diluted 14,285 14,174 14,241 14,123
[1] Net loss per share for the three months ended October 31, 2011 was calculated based on basic shares outstanding due to the anti-dilutive effect of the inclusion of common stock equivalent shares.
[2] Net loss per share was calculated based on basic shares outstanding due to the anti-dilutive effect of the inclusion of common stock equivalent shares.