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Significant accounting policies immaterial errors (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Jan. 31, 2013 | Jan. 31, 2012 | Jan. 31, 2011
Net Income (Loss) Attributable to Parent | $ (18,485) | $ (4,959) |
Inventories, net | 42,333 | 40,204 |
Total current assets | 84,346 | 82,670 |
Total assets | 149,479 | 157,283 |
Retained earnings | 4,553 | 23,038 |
Total stockholders' equity | 54,255 | 72,355 | 78,262
Total liabilities and stockholders' equity | 149,479 | 157,283 |
Cost of sales | 173,911 | 197,175 |
Gross Profit | 38,107 | 36,321 |
Loss from operations |  | (5,063) |
Loss before income taxes | (7,695) | (4,942) |
Inventories | (2,080) | (4,683) |
Restatement Adjustment [Member] |  |  |
Net Income (Loss) Attributable to Parent |  | 28 |
Inventories, net |  | 236 |
Total current assets |  | 236 |
Total assets |  | 236 |
Retained earnings |  | 236 |
Total stockholders' equity |  | 236 |
Total liabilities and stockholders' equity |  | 236 |
Cost of sales |  | (28) |
Gross Profit |  | 28 |
Loss from operations |  | 28 |
Loss before income taxes |  | 28 |
Inventories |  | 28 |
Scenario, Previously Reported [Member] |  |  |
Net Income (Loss) Attributable to Parent |  | (4,987) |
Inventories, net |  | 39,968 |
Total current assets |  | 82,434 |
Total assets |  | 157,047 |
Retained earnings |  | 22,802 |
Total stockholders' equity |  | 72,119 |
Total liabilities and stockholders' equity |  | 157,047 |
Cost of sales |  | 197,203 |
Gross Profit |  | 36,293 |
Loss from operations |  | (5,091) |
Loss before income taxes |  | (4,970) |
Inventories |  | 4,655 |
Retained Earnings |  |  |
Net Income (Loss) Attributable to Parent | (18,485) | (4,959) |
Total stockholders' equity | $ 4,553 | $ 23,038 | $ 27,997

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