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Investments In Equity Method Investees (Details Textual)
$ in Thousands, ₪ in Millions
12 Months Ended
Aug. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 05, 2019
USD ($)
Aug. 31, 2019
ILS (₪)
Aug. 31, 2019
USD ($)
Aug. 12, 2019
ILS (₪)
Aug. 12, 2019
USD ($)
Business Acquisition [Line Items]                
Investment in joint venture   $ 3,235 $ 1,306          
Debt Instrument, Increase, Accrued Interest $ 100              
Notes Receivable, Related Parties   200            
Service charge   600 700          
Issued letters of credit   800   $ 5,000        
Cost paid   0          
Atid Drilling Ltd. [Member]                
Business Acquisition [Line Items]                
Investment in joint venture   1,000          
Percentage of ownership   37.50%            
New Atid [Member]                
Business Acquisition [Line Items]                
Agreed to loan amount             ₪ 5.1 $ 1,500
Commitment to loan amount             ₪ 1.9 $ 500
Additional Loan Amount         ₪ 0.8 $ 200    
Shoreditch [Member]                
Business Acquisition [Line Items]                
Investment in joint venture   $ 2,735 1,306          
Percentage of ownership   73.00%            
GEUK [Member]                
Business Acquisition [Line Items]                
Gain on consolidation of AMSO, LLC   $ 2,700 1,300          
Investment in joint venture   8,000            
EGC [Member]                
Business Acquisition [Line Items]                
Related party loan     $ 200          
Annual interest rate     2.00%          
Debt Instrument, Increase, Accrued Interest   $ 200