Segment Reporting (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting [Abstract]
Interest and dividends	$ 632,688	$ 600,463	$ 529,998
Interest Expense, Operating and Nonoperating	206,601	221,571	144,322
Interest Income (Expense), Operating	426,087	378,892	385,676
Provision for Other Credit Losses	36,725	29,170	14,813
Trust income	12,907	11,821	10,516
Service charges on deposit accounts	22,774	22,518	21,437
Insurance and retail brokerage commissions	12,652	11,546	10,929
Bank Owned Life Insurance Income	6,877	6,361	4,875
Gain (Loss) on Sale of Mortgage Loans	7,296	5,795	3,951
Gain (Loss) on Disposition of Other Financial Assets	6,888	9,111	6,744
Non Interest Income Interchange	15,611	21,887	28,640
Other Segment Income	18,696	16,553	14,392
Labor and Related Expense	163,981	149,287	142,871
Occupancy, Net	20,714	19,783	19,221
Equipment Expense	18,161	17,453	17,308
Information Technology and Data Processing	16,359	15,582	15,010
Professional Fees	6,892	5,533	5,919
Other Segment Expense	68,721	63,107	69,588
Income tax provision	39,056	35,636	40,492
Segment Net Income	152,302	142,572	157,063
Net Income	152,302	142,572	157,063
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	$ 0	$ 0	$ 0