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Related-party Transactions (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Related party transactions [abstract]    
Short-term employee benefits $ 855 $ 829
Post-employment benefits 7 7
Share-based compensation 41 226
Total Key management personnel compensation $ 903 $ 1,062