Accumulated Other Comprehensive Income - Schedule of Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI [Roll Forward]
Beginning Balance	$ 2,641,268	$ 2,579,403	$ 2,558,919	$ 2,666,803
OCI before reclassifications			(2,022)	(49,431)
Amounts reclassified from AOCI			0	1,313
Other comprehensive income (loss)	9,544	(29,447)	(2,022)	(48,118)
Ending Balance	2,737,312	2,494,457	2,737,312	2,494,457
Accumulated Other Comprehensive Income
AOCI [Roll Forward]
Beginning Balance	174,102	210,674	185,668	229,345
Other comprehensive income (loss)	9,544	(29,447)	(2,022)	(48,118)
Ending Balance	183,646	181,227	183,646	181,227
Unrealized gains (losses) on available-for-sale securities, net
AOCI [Roll Forward]
Beginning Balance			185,668	229,345
OCI before reclassifications			(2,022)	(49,431)
Amounts reclassified from AOCI	0		0	1,313
Other comprehensive income (loss)			(2,022)	(48,118)
Ending Balance	$ 183,646	$ 181,227	$ 183,646	$ 181,227