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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
Statements of Operations [Abstract]        
Net sales $ 52,261 $ 63,990 $ 104,989 $ 117,391
Cost of sales 42,355 53,206 85,955 98,365
Gross profit 9,906 10,784 19,034 19,026
Operating expenses        
General and administrative expenses 6,620 6,615 13,961 13,007
Selling expenses 3,957 4,081 7,463 7,575
Total operating expenses 10,577 10,696 21,424 20,582
(Loss) income from operations (671) 88 (2,390) (1,556)
Income (loss) from joint venture 69 84 (177) (99)
Interest expense, net 420 332 791 619
Loss before income taxes (1,022) (160) (3,358) (2,274)
Income tax expense 335 1,677 55 1,055
Net loss $ (1,357) $ (1,837) $ (3,413) $ (3,329)
Weighted average number of common shares outstanding        
Basic and diluted 6,923 6,863 6,919 6,859
Loss per share        
Basic and diluted $ (0.20) $ (0.27) $ (0.49) $ (0.49)