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Discontinued Operations - Schedule of Financial Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Revenues | $ 8,659 | $ 16,548
Gross profit | 3,525 | 6,167
Net loss | (119) | (10,802)
GridSense [Member] | Discontinued Operations [Member] |  |
Revenues | 212 | 2,507
Gross profit | 28 | 21
Net loss | $ (286) | (3,923)
U.S. Seismic Systems, Inc [Member] | Discontinued Operations [Member] |  |
Revenues |  | 163
Gross profit |  | (68)
Net loss |  | (772)
Loss on deconsolidation |  | (401)
Loss from discontinued operations, net of income taxes |  | $ (1,173)

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