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Cash and Restricted Deposits (Details Textual) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Cash and Restricted Deposits (Textual)    
Restricted deposits $ 408 $ 368
Credit cards [Member]    
Cash and Restricted Deposits (Textual)    
Restricted deposits $ 31  
Credit cards [Member] | Maximum [Member]    
Cash and Restricted Deposits (Textual)    
Annual interest rate 0.05%  
Credit cards [Member] | Minimum [Member]    
Cash and Restricted Deposits (Textual)    
Annual interest rate 0.01%  
Lease [Member]    
Cash and Restricted Deposits (Textual)    
Restricted deposits $ 377  
Annual interest rate 0.01%