Annual report pursuant to Section 13 and 15(d)

Basis of Presentation and Significant Accounting Policies - Schedule of Reconciliation of Cash And Restricted Cash (Details)

v3.19.1
Basis of Presentation and Significant Accounting Policies - Schedule of Reconciliation of Cash And Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Accounting Policies [Abstract]      
Cash $ 2,723 $ 748  
Restricted cash 29 29  
Total cash and restricted cash shown in the statements of cash flows $ 2,752 $ 777 $ 3,640