CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income		$ 57,636	$ 69,803	$ 120,198	$ 136,707
Other comprehensive income (loss), net of tax:
Unrealized (loss) gain on securities available-for-sale, net of income taxes	[1]	(15,550)	(40,474)	20,850	(159,065)
Reclassification adjustment for net loss (gain) on sales of securities included in net income, net of income taxes	[2]	0	22	(99)	(1,503)
Net unrealized loss on securities transferred from available-for-sale to held-to-maturity, net of income taxes	[3]	0	(31,326)	(36,076)	(47,884)
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity, net of income taxes	[4]	2,812	993	5,105	1,296
Other comprehensive (loss), net of tax		(12,738)	(70,785)	(10,220)	(207,156)
Comprehensive income (loss), net of tax		$ 44,898	$ (982)	$ 109,978	$ (70,449)

[1] Income tax (benefit) expense of the unrealized (loss) gain on securities was $(6.2) million and $(16.2) million for the three months ended June 30, 2023 and June 30, 2022, respectively, and $8.3 million and $(63.5) million for the six months ended June 30, 2023 June 30, 2022, respectively.

[2] Income tax (benefit) expense on the reclassification adjustment for net gain on sales of securities included in net income was $0 and $(9,000) for the three months ended June 30, 2023 and June 30, 2022, respectively, and $39,000 and $600,000 for the six months ended June 30, 2023 and June 30, 2022, respectively.

[3] Income tax (benefit) expense on the unrealized loss on securities transferred from available-for-sale to held-to-maturity was $0 and $(12.5) million for the three months ended June 30, 2023 and June 30, 2022, respectively, and $(14.3) million and $(19.1) million for the six months ended June 30, 2023 and June 30, 2022, respectively.

[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 $1.1 million and $396,000 for the three months ended June 30, 2023 and June 30, 2022, respectively, and $2.0 million and $517,000 for the six months ended June 30, 2023 and June 30, 2022, respectively.