CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 29,365	$ 75,172	$ 412,948	$ 546,057
Other comprehensive income (loss):
Unrealized gains (losses) on investments	(17,686)	(68,701)	3,358	(197,930)
Unrealized gains (losses) on cash flow hedges	(5,767)	29,823	(13,191)	98,248
Total unrealized gains (losses)	(23,453)	(38,878)	(9,833)	(99,682)
Income tax (expense) benefit	5,702	9,400	2,388	24,102
Other comprehensive income (loss), net of tax (expense) benefit	(17,751)	(29,478)	(7,445)	(75,580)
Total comprehensive income	$ 11,614	$ 45,694	$ 405,503	$ 470,477