Quarterly report pursuant to Section 13 or 15(d)

Supplemental Cash Flow Information - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details)

v3.21.2
Supplemental Cash Flow Information - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Cash, Cash Equivalents and Restricted Cash [Line Items]            
Cash and cash equivalents $ 1,696,210 $ 212,473 $ 184,620 $ 216,935 $ 530,670 $ 164,798
Total cash, cash equivalents, and restricted cash reported in the statements of cash flows 1,699,096 214,715 186,808 219,102 532,853 169,745
Prepaid Expenses and Other Current Assets            
Cash, Cash Equivalents and Restricted Cash [Line Items]            
Restricted cash and cash equivalents 2,108 1,460 1,275 1,252 1,266 4,026
Other Assets            
Cash, Cash Equivalents and Restricted Cash [Line Items]            
Restricted cash and cash equivalents $ 778 $ 782 $ 913 $ 915 $ 917 $ 921