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Segment Information | 12 Months Ended
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Mar. 31, 2017
Segment Reporting [Abstract] |
Segment Information | Note 13 - Segment Information: The Company has one reporting segment as its operating segments meet the requirement for aggregation. The Company and its operating subsidiaries design and manufacture heat transfer and vacuum equipment for the chemical, petrochemical, refining and electric power generating markets. Energy Steel supplies components and raw materials for the nuclear power generating market. Heat transfer equipment includes surface condensers, Heliflows, water heaters and various types of heat exchangers. Vacuum equipment includes steam jet ejector vacuum systems and liquid ring vacuum pumps. These products are sold individually or combined into package systems. The Company also services and sells spare parts for its equipment. Net sales by product line for the following fiscal years are:
|  | Year ended March 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Heat transfer equipment |  | $ | 27,616 |  |  | $ | 31,479 |  |  | $ | 58,224 |
Vacuum equipment |  |  | 29,672 |  |  |  | 28,323 |  |  |  | 28,698 |
All other |  |  | 34,481 |  |  |  | 30,237 |  |  |  | 48,247 |
Net sales |  | $ | 91,769 |  |  | $ | 90,039 |  |  | $ | 135,169 |
The breakdown of net sales by geographic area for the following fiscal years is:
|  | Year ended March 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |
Africa |  | $ | 150 |  |  | $ | 112 |  |  | $ | 237 |
Asia |  |  | 7,711 |  |  |  | 8,859 |  |  |  | 11,253 |
Australia & New Zealand |  |  | 42 |  |  |  | 230 |  |  |  | 330 |
Canada |  |  | 3,506 |  |  |  | 8,702 |  |  |  | 15,807 |
Central America |  |  | 38 |  |  |  | 36 |  |  |  | 1,772 |
Europe |  |  | 533 |  |  |  | 856 |  |  |  | 943 |
Mexico |  |  | 2,690 |  |  |  | 620 |  |  |  | 407 |
Middle East |  |  | 3,160 |  |  |  | 11,039 |  |  |  | 10,155 |
South America |  |  | 4,773 |  |  |  | 2,558 |  |  |  | 7,866 |
U.S. |  |  | 69,166 |  |  |  | 57,027 |  |  |  | 86,399 |
Net sales |  | $ | 91,769 |  |  | $ | 90,039 |  |  | $ | 135,169 |
The final destination of products shipped is the basis used to determine net sales by geographic area. No sales were made to the terrorist sponsoring nations of Sudan, Iran, or Syria. In fiscal 2017, total sales to one customer amounted to 11% of total consolidated net sales. There were no sales to a single customer that amounted to 10% or more of total consolidated net sales in fiscal 2016 or fiscal 2015.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599 Reference 14: 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 + Details
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