Accumulated Other Comprehensive Income - Schedule of Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
AOCI [Roll Forward]
Beginning Balance	$ 2,649,387	$ 3,336,728	$ 2,666,803	$ 3,736,191
OCI before reclassifications			(19,984)	(99,324)
Amounts reclassified from AOCI			1,313	0
Other comprehensive income (loss)	(14,081)	(58,369)	(18,671)	(99,324)
Ending Balance	2,579,403	2,972,999	2,579,403	2,972,999
Accumulated Other Comprehensive Income
AOCI [Roll Forward]
Beginning Balance	224,755	364,099	229,345	405,054
Other comprehensive income (loss)	(14,081)	(58,369)	(18,671)	(99,324)
Ending Balance	210,674	305,730	210,674	305,730
Unrealized gains (losses) on available-for-sale securities, net
AOCI [Roll Forward]
Beginning Balance			229,345	405,054
OCI before reclassifications			(19,984)	(99,324)
Amounts reclassified from AOCI			1,313	0
Other comprehensive income (loss)			(18,671)	(99,324)
Ending Balance	$ 210,674	$ 305,730	$ 210,674	$ 305,730