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Discontinued Operations (Details Narrative) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
Jul. 31, 2016
Jun. 30, 2017
Mar. 31, 2016
Jun. 30, 2017
Dec. 31, 2016
GridSense Inc. [Member]          
Sale of business assets, gross sale price $ 1,000        
Indemnity escrow $ 100        
Indemnity escrow released   $ 50      
Acorn and Omnimetrix [Member]          
Amount used to settle claims       $ 523  
GridSense Inc. [Member] | Outside Creditor [Member]          
Amount of outside creditors claims settled       70  
Disbursed to outside creditors       $ 7  
GridSense Inc. [Member]          
Accrued severance costs     $ 140    
Accrual for lease commitment     $ 100    
GridSense Inc. [Member]          
Cash available excluding escrow amounts         $ 19
Remaining creditor claims         $ 314