Annual report pursuant to Section 13 and 15(d)

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

v3.21.1
Cash, Cash Equivalents, and Restricted Cash - Cash and Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Cash and Cash Equivalents [Abstract]      
Cash $ 3,940 $ 276  
Restricted cash 91 86  
Total cash and restricted cash $ 4,031 $ 362 $ 6,344