CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) - 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]
Unrealized holding (loss) gain on securities arising during the period, income tax expense (benefit)	$ (6,200)	$ (16,200)	$ 8,300	$ (63,500)
Reclassification adjustment for net gain on sale of securities included in net income, income tax expense	0	(9)	39	600
Unrealized loss on securities transferred from available-for-sale to held-to maturity, income tax (benefit) expense	0	(12,500)	(14,300)	(19,100)
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity, income tax expense	$ 1,100	$ 396	$ 2,000	$ 517