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Condensed Consolidated Statements of Operations (Unaudited) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jul. 31, 2012
Jul. 31, 2011
Jul. 31, 2012
Jul. 31, 2011
Condensed Consolidated Statements of Operations [Abstract]        
Net sales $ 60,392 $ 62,817 $ 84,060 $ 87,073
Costs of goods sold 37,525 42,935 54,226 60,413
Gross profit 22,867 19,882 29,834 26,660
Selling, general and administrative expenses 15,145 16,714 26,674 28,650
Interest expense 463 393 718 607
Income (loss) before income taxes 7,259 2,775 2,442 (2,597)
Provision for income taxes 206 43 222 71
Net income (loss) $ 7,053 $ 2,732 $ 2,220 $ (2,668)
Dividend declared        
Cash       $ 0.05
Net income (loss) per common share (a) :        
Basic $ 0.49 $ 0.19 $ 0.15 [1] $ (0.19) [1]
Diluted $ 0.49 $ 0.19 $ 0.15 [1] $ (0.19) [1]
Weighted average shares outstanding:        
Basic 14,369 14,274 14,333 14,240
Diluted 14,395 14,292 14,358 14,240
[1] (a) Net income per share for the six months ended July 31, 2012 was calculated based on diluted shares outstanding. Net loss pershare for the six months ended July 31, 2011 was calculated based on basic shares outstanding due to the anti-dilutive effect on the inclusion of common stock equivalent shares.