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v3.3.1.900

Segment Information (Continuing Operating Segments) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) segment | Dec. 31, 2014 USD ($)
Net revenues | $ 7,636 | $ 7,041
Interest income | 0 | 2
Depreciation and amortization | 348 | 209
Interest expense | 11 | 17
Purchase of property and equipment | 70 | 46
Total assets | 13,421 | 13,764
Income before income taxes | $ 1,744 | 1,554
Number of reportable segments | segment | 2 |
Foreign Country Revenue [Member] |  |
Net revenues | $ 972 | 973
Production Monitoring [Member] |  |
Net revenues | 7,636 | 7,041
Interest income | 0 | 0
Depreciation and amortization | 348 | 209
Interest expense | 11 | 17
Purchase of property and equipment | 70 | 46
Total assets | 4,998 | 4,945
Income before income taxes | 295 | 389
Production Monitoring [Member] | Foreign Country Revenue [Member] |  |
Net revenues | 972 | 973
ESI Investment Company [Member] |  |
Interest income | 0 | 2
Total assets | 8,423 | 8,819
Income before income taxes | $ 1,449 | $ 1,165

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