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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2015
Segment Information [Abstract] |
Financial Information Relating To Continuing Operating Segments |
|  | 2015 |  |  | 2014
Net revenues |  |  |  |  |  |  |
Production Monitoring |  | $ | 7,636 |  |  | $ | 7,041
Total |  |  | 7,636 |  |  |  | 7,041
Sales in foreign countries |  |  |  |  |  |  |
Production Monitoring |  |  | 972 |  |  |  | 973
Total |  |  | 972 |  |  |  | 973
Interest income |  |  |  |  |  |  |
Production Monitoring |  |  | 0 |  |  |  | 0
ESI Investment Company |  |  | 0 |  |  |  | 2
Total |  |  | 0 |  |  |  | 2
Depreciation and amortization expense |  |  |  |  |  |  |
Production Monitoring |  |  | 348 |  |  |  | 209
Total |  |  | 348 |  |  |  | 209
Interest expense |  |  |  |  |  |  |
Production Monitoring |  |  | 11 |  |  |  | 17
Total |  |  | 11 |  |  |  | 17
Capital purchases |  |  |  |  |  |  |
Production Monitoring |  |  | 70 |  |  |  | 46
Total |  |  | 70 |  |  |  | 46
Total assets |  |  |  |  |  |  |
Production Monitoring |  |  | 4,998 |  |  |  | 4,945
ESI Investment Company |  |  | 8,423 |  |  |  | 8,819
Total |  |  | 13,421 |  |  |  | 13,764
Income before income taxes |  |  |  |  |  |  |
Production Monitoring |  |  | 295 |  |  |  | 389
ESI Investment Company |  |  | 1,449 |  |  |  | 1,165
Total |  |  | 1,744 |  |  |  | 1,554

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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=51669610&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=51669610&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=51669610&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=51669610&loc=d3e8736-108599 + Details
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