Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Contract acquisition costs (Details)

v3.22.1
Summary of Significant Accounting Policies - Contract acquisition costs (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Summary of Significant Accounting Policies      
Deferred asset $ 5.4 $ 2.3  
Amortized commissions $ 1.9 $ 0.5 $ 0.2