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Revision to Previously Reported Financial Information - Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash flows provided (used) by operating activities	$ 61,306	$ 20,183	$ 114,249
Net cash flows provided (used) by investing activities	(23,840)	(18,262)	(32,665)
Net cash flows provided (used) by financing activities	(491,094)	(93,732)	178,857
Cash and cash equivalents	$ 630,397	561,705	921,178	$ 1,095,274	$ 670,980
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash flows provided (used) by operating activities		21,231	115,629
Net cash flows provided (used) by investing activities		(21,161)	(34,160)
Net cash flows provided (used) by financing activities		(91,881)	178,972
Cash and cash equivalents		561,705	921,178
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash flows provided (used) by operating activities		(1,048)	(1,380)
Net cash flows provided (used) by investing activities		2,899	1,495
Net cash flows provided (used) by financing activities		(1,851)	(115)
Cash and cash equivalents		$ 0	$ 0