Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income		$ 51,101	$ 51,330	$ 95,525	$ 99,100
Other comprehensive income, net of tax
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax		9,835	3,392	26,229	384
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		2,329	1,735	5,785	247
Net change in other comprehensive income for defined benefit postretirement plans	[1]	(45)	(14)	(90)	(29)
Total other comprehensive income		12,119	5,113	31,924	602
Total comprehensive income		$ 63,220	$ 56,443	$ 127,449	$ 99,702

[1] The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 12 - Employee Benefit Plans within the Notes to the Consolidated Financial Statements included in Item 8 of the Company’s 2024 Form 10-K.