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Discontinued Operations - Schedule of Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues	$ 1,230	$ 1,045	$ 2,439	$ 2,141
Gross profit	$ 736	$ 594	1,481	1,208
GridSense Inc. [Member] | Discontinued Operations [Member]
Revenues
Gross profit
Income from discontinued operations, net of income taxes				$ 65

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