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Business and segment information Segment information (Tables) | 12 Months Ended
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Jan. 31, 2017
Segment information [Line Items] |
Segment information [Table Text Block] | Segment information was as follows:
| 2016 | 2015
Net sales |  |
Piping Systems | $98,845 | $122,696
Gross profit |  |
Piping Systems | $11,716 | $26,741
Income (loss) from operations |  |
Piping Systems | $(2,435) | $10,537
Corporate | (8,353) | (7,659)
Total (loss) income from operations | $(10,788) | $2,878
Segment assets |  |
Piping Systems | $98,855 | $112,161
Corporate | 2,731 | 10,229
Total segment assets | $101,586 | $122,390
Capital expenditures |  |
Piping Systems | $1,925 | $4,762
Corporate | 332 | 289
Total capital expenditures | $2,257 | $5,051
Depreciation and amortization |  |
Piping Systems | $5,009 | $3,735
Corporate | 327 | 469
Total depreciation and amortization | $5,336 | $4,204
Geographic information [Table Text Block] | Geographic information. Net sales are attributed to a geographic area based on the destination of the product shipment. Sales to foreign customers was 57% in 2016 compared to 50% in 2015. Long-lived assets are based on the physical location of the assets and consist of property, plant and equipment used in the generation of revenues in the geographic area.
| 2016 | 2015 |
Net sales |  |
United States | $42,048 | $58,707
Middle East | 28,009 | 60,749
Canada | 25,915 | 2,581
India | 2,360 | 372
Other | 513 | 287
Total net sales | $98,845 | $122,696
Property, plant and equipment, net of accumulated depreciation |  |
United States | $11,747 | $13,822
Canada | 13,276 | — |
Middle East | 10,987 | 11,211
India | 265 | 367
Total | $36,275 | $25,400

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + 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=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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