Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Consolidated Statements of Cash Flows (Unaudited) [Abstract]
Net income	$ 45,572	$ 37,552
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	3,544	3,182
Amortization of right-of-use asset	4,992	4,981
Net gain on sale of other real estate owned	(40)	0
Writedown of other real estate owned	547	0
Provision for credit losses	1,200	1,600
Deferred tax expense	2,812	1,004
Net amortization of securities	680	902
Stock based compensation expense	925	463
Net gain on sale of bank premises and equipment	0	(23)
(Increase) Decrease in taxes receivable	(5,732)	2,897
Increase in interest receivable	(1,362)	(817)
Decrease in interest payable	(301)	(86)
Increase in other assets	(2,159)	(3,149)
Decrease in operating lease liabilities	(5,635)	(5,399)
(Decrease) Increase in accrued expenses and other liabilities	(3,910)	1,996
Total adjustments	(4,439)	7,551
Net cash provided by operating activities	41,133	45,103
Cash flows from investing activities:
Proceeds from sales, paydowns and calls of securities available for sale	54,469	54,486
Proceeds from paydowns of held to maturity securities	746	791
Purchases of securities available for sale	(76,113)	(37,176)
Proceeds from maturities of securities available for sale	70,050	60,000
Purchases of Federal Home Loan Bank stock	(94)	(304)
Net increase in loans	(93,367)	(70,482)
Proceeds from dispositions of other real estate owned	531	68
Proceeds from dispositions of bank premises and equipment	0	64
Purchases of bank premises and equipment	(9,480)	(2,540)
Net cash (used in) provided by investing activities	(53,258)	4,907
Cash flows from financing activities:
Net increase (decrease) in deposits	90,290	(86,586)
Net change in short-term borrowings	12,968	2,460
Stock based award tax withholding payments	(11)	0
Purchases of treasury stock	(16,871)	(374)
Dividends paid	(20,507)	(20,549)
Net cash provided by (used in) financing activities	65,869	(105,049)
Net increase (decrease) in cash and cash equivalents	53,744	(55,039)
Cash and cash equivalents at beginning of period	641,812	578,004
Cash and cash equivalents at end of period	695,556	522,965
Cash paid during the year for:
Interest paid	68,385	68,456
Income taxes paid	14,368	8,869
Other non cash items:
Transfer of loans to other real estate owned	98	2,377
Increase in dividends payable	254	(7)
Change in unrealized gain (loss) on securities available for sale-gross of deferred taxes	10,747	9,546
Change in deferred tax effect on unrealized (gain) loss on securities available for sale	(2,790)	(2,466)
Amortization of net actuarial gain and prior service cost on pension and postretirement plans	(1,542)	(598)
Change in deferred tax effect of amortization of net actuarial gain postretirement benefit plans	$ 401	$ 155