CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 73,363	$ 69,803	$ 90,088	$ 210,070	$ 255,058
Other comprehensive loss, net of tax:
Unrealized loss on securities available-for-sale, net of income taxes	[1]	(68,070)	(40,474)	(20,138)	(227,135)	(47,387)
Reclassification adjustment for net loss (gain) on sales of securities included in net income, net of income taxes	[2]	281	22	(2,991)	(1,222)	(9,510)
Net unrealized loss on securities transferred from available-for-sale to held-to-maturity, net of income taxes	[3]	0	(31,326)	(2,277)	(47,884)	(2,277)
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity, net of income taxes	[4]	1,694	993	58	2,990	58
Other comprehensive loss , net of tax		(66,095)	(70,785)	(25,348)	(273,251)	(59,116)
Comprehensive income (loss), net of tax		$ 7,268	$ (982)	$ 64,740	$ (63,181)	$ 195,942

[1] Income tax (benefit) expense of the unrealized loss on securities was $(27.2) million, $(16.2) million, and $(8.1) million for the three months ended September 30, 2022, June 30, 2022, and September 30, 2021, respectively, and $(90.7) million and $(19.0) million for the nine months ended September 30, 2022 and September 30, 2021, respectively.

[2] Income tax (benefit) expense on the reclassification adjustment for net loss (gain) on sales of securities included in net income was $(112,000), $(9,000), and $1.2 million for the three months ended September 30, 2022, June 30, 2022, and September 30, 2021, respectively, and $488,000 and $3.8 million for the nine months ended September 30, 2022 and September 30, 2021, respectively.

[3] Income tax (benefit) expense on the unrealized loss on securities transferred from available-for-sale to held-to-maturity was $0, $(12.5) million, and $(913,000) for the three months ended September 30, 2022, June 30, 2022, and September 30, 2021, respectively, and $(19.1) million and $(913,000) for the nine months ended September 30, 2022 and September 30, 2021.

[4] Income tax expense on the amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity included in net income was $677,000, $396,000, and $24,000 for the three months ended September 30, 2022, June 30, 2022, and September 30, 2021, respectively, and $1.2 million and $24,000 for the nine months ended September 30, 2022 and September 30, 2021, respectively.