Quarterly report pursuant to Section 13 or 15(d)

Description of Business and Summary of Significant Accounting Policies - Cash and cash equivalents (Details)

v3.21.2
Description of Business and Summary of Significant Accounting Policies - Cash and cash equivalents (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Description of Business and Summary of Significant Accounting Policies        
Restricted cash equivalents $ 300      
Cash and cash equivalents 410,217 $ 196,046    
Restricted cash - current 4,614 11,407    
Restricted Cash, Noncurrent 1,000      
Cash, cash equivalents and restricted cash $ 415,831 $ 207,453 $ 8,137 $ 7,179