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Condensed Consolidated Statement of Changes In Equity (Unaudited) - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Warrants [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Total Acorn Energy, Inc. Shareholders' Equity [Member]	Non-Controlling Interests [Member]	Total
Balances at Dec. 31, 2016	$ 301	$ 99,767	$ 1,600	$ (97,046)	$ (3,036)	$ (254)	$ 1,332	$ 555	$ 1,887
Balances, shares at Dec. 31, 2016	30,125,000
Net loss				(475)			(475)	(124)	(599)
Deconsolidation of GridSense						254	254		254
Accrued dividend in OmniMetrix preferred shares								(75)	(75)
Shares granted in lieu of director fees	$ 1	23					24		24
Shares granted in lieu of director fees, shares	133,000
Stock option compensation		22					22		22
Balances at Sep. 30, 2017	$ 302	$ 99,812	$ 1,600	$ (97,521)	$ (3,036)		$ 1,157	$ 356	$ 1,513
Balances, shares at Sep. 30, 2017	30,258,000

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