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Significant accounting policies Inventories (Tables) | 12 Months Ended
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Jan. 31, 2014
Inventories [Abstract] |
Schedule of Inventory, Current [Table Text Block] |
| 2013 | 2012
Raw materials | $27,330 | $31,820
Work in process | 2,855 | 2,333
Finished goods | 4,311 | 4,051
Subtotal | 34,496 | 38,204
Less allowances | 949 | 675
Inventories, net | $33,547 | $37,529

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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