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Discontinued Operations - Schedule of Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues	$ 1,209	$ 1,096
Gross profit	745	614
GridSense Inc. [Member] | Discontinued Operations [Member]
Revenues
Gross profit
Income from discontinued operations, net of income taxes		$ 65

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