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Business and segment information Geographic information (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Jan. 31, 2014 | Jan. 31, 2013
Geographic information [Line Items] |  |
foreign sales | 0.00% | 0.00%
Net sales | $ 226,835 | $ 168,807
Property, plant and equipment, net of accumulated depreciation | 42,541 | 45,582
United States |  |
Geographic information [Line Items] |  |
Net sales | 97,311 | 104,830
Property, plant and equipment, net of accumulated depreciation | 25,260 | 26,952
Middle East |  |
Geographic information [Line Items] |  |
Net sales | 94,500 | 24,631
Property, plant and equipment, net of accumulated depreciation | 12,751 | 13,204
Denmark |  |
Geographic information [Line Items] |  |
Property, plant and equipment, net of accumulated depreciation | 4,020 | 4,445
Europe |  |
Geographic information [Line Items] |  |
Net sales | 14,933 | 16,324
Canada |  |
Geographic information [Line Items] |  |
Net sales | 7,591 | 9,771
India |  |
Geographic information [Line Items] |  |
Net sales | 773 | 6,317
Property, plant and equipment, net of accumulated depreciation | 510 | 981
Other Americas |  |
Geographic information [Line Items] |  |
Net sales | 6,915 | 2,317
Other |  |
Geographic information [Line Items] |  |
Net sales | $ 4,812 | $ 4,617

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- Definition foreign sales - or foreign customers + References No definition available. + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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- Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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