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OTHER ASSETS (Details Narrative) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 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 $ 1,806 $ 1,806   $ 2,207    
Carrying value of note 5,096 5,096   $ 865    
Write-off of notes receivable   600        
Subordinated Promissory Notes [Member] | Stock Purchase Agreement [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Carrying value of note 5,100 5,100        
Cash payment for promissory note 1,700          
Transformer Business Units [Member] | Subordinated Promissory Notes [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Principal amount     $ 7,500      
Carrying value of note $ 5,100 $ 5,100        
Interest rate 4.00% 4.00% 4.00%      
Cash payment for promissory note $ 1,700          
Revaluation of note   $ 651        
Transformer Business Units [Member] | Subordinated Promissory Notes [Member] | First Seller Note [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Principal amount $ 3,300 3,300 $ 5,000      
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