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Discontinued Operations - Schedule of Assets and Liabilities Related to Discontinued Operations (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Sep. 25, 2017
Dec. 31, 2016
Cash $ 973 $ 481   $ 241
Total assets 3,919 9,222    
Accounts payable $ 246 $ 489    
GridSense Inc. [Member] | Discontinued Operations [Member]        
Cash [1]     $ 10  
Other current assets and non-current assets [1]      
Total assets [1]     10  
Accounts payable [1]     430  
Accrued payroll, payroll taxes and social benefits [1]     90  
Other current and non-current liabilities [1]     404  
Total liabilities [1]     924  
Net liabilities [1]     $ 914  
[1] Just prior to the deconsolidation