Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net Income Available to Common Shareholders	$ 117,101	$ 114,365	$ 102,071
Available-for-Sale Securities
Unrealized (loss) gain on available-for-sale securities arising during period	(11,092)	21,442	(192,359)
Reclassification adjustment for net losses (gains)	2,825	4,908	(4)
Other comprehensive (loss) income related to available-for-sale securities	(8,267)	26,350	(192,363)
Defined Benefit Pension Plan
Net gain (loss) arising during period	1,128	777	(697)
Reclassification adjustment for amortization of actuarial net gains in net periodic pension cost	372	344	780
Change in underfunded pension liability	1,500	1,121	83
Other comprehensive (loss) income before income taxes	(6,767)	27,471	(192,280)
Tax effect	1,587	(6,522)	46,532
Other comprehensive (loss) income, net of tax	(5,180)	20,949	(145,748)
Comprehensive income (loss), net of tax	$ 111,921	$ 135,314	$ (43,677)