CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Unrealized (losses) gains on securities arising during the period, net of income tax (benefit) expense		$ (84,500)	$ (20,600)	$ 19,500
Reclassification adjustment for net (gain) on sale of securities included in net income, net of income tax		488	4,800	4,000
Unrealized loss on securities transferred from available-for-sale to held-to maturity, income tax (benefit)		(19,100)	(1,900)	0
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity, income tax expense	[1]	$ 1,900	$ 70	$ 0

[1] (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 $1.9 million for 2022, $70,000 for 2021, and $0 for 2020.