Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Interest and Fee Income:	$ 8,655	$ 8,930	$ 17,377	$ 17,910
Loans	11,354	11,845	22,678	23,585
Equity securities	175	152	349	304
Debt securities available for sale	43,927	47,452	90,170	94,262
Interest-bearing cash	4,961	2,110	7,244	4,052
Total Interest and Fee Income	69,072	70,489	137,818	140,113
Deposits	2,460	582	4,566	1,040
Bank Term Funding Program borrowings	2,692	0	3,535	0
Securities sold under repurchase agreements	155	25	207	38
Total Interest Expense	5,307	607	8,308	1,078
Net Interest and Fee Income	63,765	69,882	129,510	139,035
Provision (Reversal of Provision) for Credit Losses	0	0	300	(1,550)
Provision (Reversal of Provision) for Credit Losses	63,765	69,882	129,210	140,585
Noninterest Income:
Securities losses	0	(125)	0	(125)
Other noninterest income	791	768	1,545	1,755
Total Noninterest Income	10,500	10,700	20,597	21,249
Noninterest Expense:
Salaries and related benefits	12,483	11,828	25,069	23,895
Occupancy and equipment	5,158	5,012	10,198	10,497
Outsourced data processing services	2,511	2,488	5,047	4,932
Limited partnership operating losses	1,440	1,440	2,880	2,874
Professional fees	362	485	764	961
Other noninterest expense	3,490	3,975	6,936	7,664
Total Noninterest Expense	26,130	25,839	52,229	52,049
Income Before Income Taxes	48,135	54,743	97,578	109,785
Provision for income taxes	12,673	14,495	25,699	29,086
Net Income	$ 35,462	$ 40,248	$ 71,879	$ 80,699
Average Common Shares Outstanding (in shares)	26,680	26,648	26,677	26,753
Average Diluted Common Shares Outstanding (in shares)	26,681	26,648	26,678	26,756
Per Common Share Data:
Basic earnings (in dollars per share)	$ 1.33	$ 1.51	$ 2.69	$ 3.02
Diluted earnings (in dollars per share)	1.33	1.51	2.69	3.02
Dividends paid (in dollars per share)	$ 0.44	$ 0.42	$ 0.88	$ 0.84
Deposit Account [Member]
Noninterest Income:
Noninterest income revenue	$ 3,469	$ 3,459	$ 6,939	$ 6,924
Credit Card, Merchant Discount [Member]
Noninterest Income:
Noninterest income revenue	2,733	2,869	5,240	5,506
Debit Card [Member]
Noninterest Income:
Noninterest income revenue	1,706	1,759	3,249	3,401
Fiduciary and Trust [Member]
Noninterest Income:
Noninterest income revenue	811	810	1,605	1,575
ATM Processing Fees [Member]
Noninterest Income:
Noninterest income revenue	540	702	1,131	1,356
Financial Service, Other [Member]
Noninterest Income:
Noninterest income revenue	450	458	888	857
Noninterest Expense:
Courier service	$ 686	$ 611	$ 1,335	$ 1,226