Quarterly report pursuant to Section 13 or 15(d)

Organization and Business - Cash, Cash Equivalents and Restricted Cash (Details)

v3.21.2
Organization and Business - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cash and cash equivalents $ 2,460   $ 7,576  
Restricted cash 501   501  
Total cash and restricted cash shown in the statement of cash flows $ 2,961 $ 4,525 $ 8,077 $ 9,608