CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
INTEREST INCOME:
Loans, including related fees	$ 226,262	$ 189,641	$ 146,295
Securities:
Taxable	24,237	24,643	21,014
Tax-exempt	10,533	10,573	9,974
Other	3,710	3,540	6,018
TOTAL INTEREST INCOME	264,742	228,397	183,301
INTEREST EXPENSE:
Deposits	81,071	51,694	16,743
Short-term borrowings	4,284	5,370	1,243
Other borrowings	4,401	4,071	273
TOTAL INTEREST EXPENSE	89,756	61,135	18,259
NET INTEREST INCOME	174,986	167,262	165,042
Provision for credit losses	16,166	7,295	(2,025)
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	158,820	159,967	167,067
NON-INTEREST INCOME:
Trust and financial services	5,468	5,155	5,155
Service charges and fees on deposit accounts	29,653	28,079	27,540
Other service charges and fees	999	801	665
Securities gains (losses), net	103	(1)	3
Interchange income	655	676	559
Loan servicing fees	1,259	1,176	1,554
Gain on sales of mortgage loans	1,153	966	1,994
Other	3,482	5,850	9,246
TOTAL NON-INTEREST INCOME	42,772	42,702	46,716
NON-INTEREST EXPENSE:
Salaries and employee benefits	74,555	68,525	65,555
Occupancy expense	9,616	9,351	9,764
Equipment expense	17,612	14,020	12,391
FDIC Expense	2,788	2,907	2,327
Other	39,867	35,373	35,986
TOTAL NON-INTEREST EXPENSE	144,438	130,176	126,023
INCOME BEFORE INCOME TAXES	57,154	72,493	87,760
Provision for income taxes	9,879	11,821	16,651
NET INCOME	47,275	60,672	71,109
OTHER COMPREHENSIVE INCOME (LOSS)
Change in unrealized gains (losses) on securities, net of reclassifications and taxes	(9,807)	10,896	(144,570)
Change in funded status of post retirement benefits, net of taxes	4,609	1,991	7,022
COMPREHENSIVE INCOME (LOSS)	$ 42,077	$ 73,559	$ (66,439)
PER SHARE DATA
Basic Earnings per Share (in dollars per share)	$ 4	$ 5.08	$ 5.82
Diluted Earnings per Share (in dollars per share)	$ 4	$ 5.08	$ 5.82
Weighted average number of shares outstanding, basic (in shares)	11,812	11,937	12,211
Weighted average number of shares outstanding, diluted (in shares)	11,812	11,937	12,211