Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details)

v3.19.2
Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2018
Dec. 31, 2017
Cash and Cash Equivalents [Abstract]        
Cash and cash equivalents $ 3,216 $ 3,631 $ 4,755  
Restricted cash 2,656 1,212 1,432  
Total cash and cash equivalents and restricted cash $ 5,872 $ 4,843 $ 6,187 $ 7,114