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Significant accounting policies Investment in joint venture (Tables) | 12 Months Ended
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Jan. 31, 2014
Investment in joint venture [Abstract] |
Schedule of Equity Method Investments [Table Text Block] | Investment in joint venture. In October 2009, the Company invested $5.9 million, which consisted of $2.0 million for a 49% interest and $3.9 million for a note receivable, in a Canadian joint venture with The Bayou Companies, Inc., a subsidiary of Aegion Corporation. The joint venture completed an acquisition of Garneau, Inc.'s pipe coating and insulation facility and associated assets located in Camrose, Alberta, Canada, which provides the Company the opportunity to participate in the growing oil sands market. In February 2012, the Company loaned $1.0 million to its Canadian joint venture to be used for capital expenditures. The Company accounts for the investment in joint venture using the equity method. The financial results included in the Company's consolidated financial statements.
| 2013 | 2012
Share of income from joint venture | $528 | $1,386
The following information summarizes the joint venture financial data:
| 2013 | 2012
Current assets | $13,034 | $14,058
Noncurrent assets | 17,093 | 19,442
Current liabilities | 2,921 | 2,703
Noncurrent liabilities | 14,837 | 18,274
Equity | 12,369 | 12,523
Revenue | 29,110 | 30,448
Gross profit | 4,748 | 7,211
Income from continuing operations | 2,619 | 3,380
Net income | 1,078 | 2,680

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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