Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Income taxes (Details)

v3.21.2
Summary of Significant Accounting Policies - Income taxes (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Summary of Significant Accounting Policies    
Foreign earnings $ 0 $ 0