CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 152,302	$ 142,572	$ 157,063
Other comprehensive income, before tax expense:
Unrealized holding gains (losses) on securities arising during the period	33,737	(8,131)	18,499
Unrealized holding gains on derivatives arising during the period	9,987	14,379	13,462
Less: reclassification adjustment for losses on securities included in net income	4,348	5,446	103
Unrealized (losses) gains for postretirement obligations:
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Reclassification Adjustment, before Tax	76	76	76
Net (loss) gain	(23)	(83)	22
Total other comprehensive income, before income tax expense	48,125	11,687	32,162
Income tax expense related to items of other comprehensive income	10,211	2,445	6,226
Comprehensive Income	$ 190,216	$ 151,814	$ 182,999