Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies (Details)

v3.21.1
Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Cash and cash equivalents $ 1,514 $ 3,839  
Restricted cash 1,180 2,389  
Total cash, cash equivalents, and restricted cash shown in the cash flow statement $ 2,694 $ 6,228 $ 5,527