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OTHER ASSETS (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Jun. 28, 2019
Dec. 31, 2018
Jan. 31, 2012
Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Right of use assets $ 1,800 $ 1,800   $ 2,200    
Write-off of notes receivable 600 600        
Transformer Business Units [Member] | Subordinated Promissory Notes [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Principal amount     $ 7,500      
Carrying value of note $ 6,600 $ 6,600        
Interest rate 4.00% 4.00%        
Notes Receivable - Developer [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Principal amount         $ 300 $ 300
Interest rate         4.50% 4.50%
Write-off of notes receivable $ 600