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Related Party Transactions (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Mar. 28, 2016
Related Party Transactions (Textual)      
Legal services $ 752 $ 358  
Accounts payable $ 0 $ 25  
Subordinated Loan Facility [Member]      
Related Party Transactions (Textual)      
Subordinated loan facility amount     $ 750