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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net Income	$ 53,345	$ 40,358	$ 144,967	$ 110,832
Other Comprehensive Income, Net of Tax:
Net Change in Unrealized Gains on Investment Securities	22,711	38,833	66,441	60,823
Net Change in Defined Benefit Plans	232	168	697	505
Other Comprehensive Income	22,943	39,001	67,138	61,328
Comprehensive Income	$ 76,288	$ 79,359	$ 212,105	$ 172,160

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