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CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2013 | Oct. 31, 2012 | Oct. 31, 2013 | Oct. 31, 2012
Net sales | $ 57,967 | $ 47,236 | $ 173,460 | $ 132,137
Cost of sales | 41,080 | 38,560 | 130,423 | 109,530
Gross profit | 16,887 | 8,676 | 43,037 | 22,607
Operating expenses |  |  |  |
General and administrative expenses | 7,953 | 5,760 | 20,760 | 17,466
Selling expenses | 2,554 | 2,731 | 8,184 | 7,978
Total operating expenses | 10,507 | 8,491 | 28,944 | 25,444
Income (loss) from operations | 6,380 | 185 | 14,093 | (2,837)
Income from joint venture | 715 | 531 | 248 | 354
Interest expense, net | 190 | 513 | 1,082 | 1,148
Income (loss) from continuing operations before income taxes | 6,905 | 203 | 13,259 | (3,631)
Income tax expense (benefit) | 92 | 74 | (99) | 159
Income (loss) from continuing operations | 6,813 | 129 | 13,358 | (3,790)
Income from discontinued operations, net of tax | 578 | 326 | 9,510 | 832
Net income (loss) | $ 7,391 | $ 455 | $ 22,868 | $ (2,958)
Weighted average number of shares outstanding |  |  |  |
Basic | 7,068 | 6,924 | 6,995 | 6,921
Diluted | 7,163 | 6,924 | 7,041 | 6,921
Earnings (loss) per share from continuing operations |  |  |  |
Basic | $ 0.96 | $ 0.02 | $ 1.91 | $ (0.55)
Diluted | $ 0.95 | $ 0.02 | $ 1.90 | $ (0.55)
Earnings per share discontinued operations |  |  |  |
Basic | $ 0.08 | $ 0.05 | $ 1.36 | $ 0.12
Diluted | $ 0.08 | $ 0.05 | $ 1.35 | $ 0.12
Earnings (loss) per share |  |  |  |
Basic | $ 1.05 | $ 0.07 | $ 3.27 | $ (0.43)
Diluted | $ 1.03 | $ 0.07 | $ 3.25 | $ (0.43)

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