Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Contract Assets and Liabilities (Details)

v3.21.2
Summary of Significant Accounting Policies - Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Accounting Policies [Abstract]    
Contract assets $ 760,279 $ 453,832
Contract liabilities $ 501,142 $ 528,864