CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 222,089	$ 205,531	$ 148,600
Unrealized gains/losses on securities available-for-sale:
Unrealized holding gain (loss) arising during the period	(371,299)	(30,042)	74,067
Reclassification adjustment for losses (gains) included in net income	(1,194)	(5,674)	(11,895)
Tax effect	78,224	7,502	(13,056)
Net of tax	(294,269)	(28,214)	49,116
Unrealized gain/loss on cash flow hedges:
Unrealized holding gain (loss) arising during the period	479	138	(1,480)
Reclassification adjustment for losses (gains) included in net income	521	1,044	906
Tax effect	(210)	(248)	121
Net of tax	790	934	(453)
Net gain (loss) arising during the period
Net gain (loss) arising during the period	(1,076)	9,482	(2,237)
Reclassification adjustment for amortization of prior service cost	82	84	84
Tax effect	209	(2,009)	452
Net of tax	(785)	7,557	(1,701)
Total other comprehensive income (loss), net of tax	(294,264)	(19,723)	46,962
Comprehensive income (loss)	$ (72,175)	$ 185,808	$ 195,562