Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Basis of Presentation and Significant Accounting Policies - Schedule of Reconciliation of Cash And Restricted Cash (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Sep. 30, 2018
Dec. 31, 2017
Accounting Policies [Abstract]        
Cash $ 5,994 $ 2,723 $ 4,684  
Restricted cash 50 29 29  
Total cash and restricted cash shown in the statements of cash flows $ 6,044 $ 2,752 $ 4,713 $ 777