Quarterly report pursuant to Section 13 or 15(d)

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

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Summary of Significant Accounting Policies - Cash and Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Accounting Policies [Abstract]        
Cash and cash equivalents $ 24,912 $ 17,996 $ 39,458  
Restricted cash 0   72  
Total cash, cash equivalents, and restricted cash $ 24,912 $ 17,996 $ 39,530 $ 4,849