CONDENSED FINANCIAL INFORMATION - PARENT COMPANY ONLY, Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities [Abstract]
Net income	$ 29,060	$ 29,118	$ 25,103
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]
Investment securities losses (gains), net	247	(339)	41
Other, net	(330)	180	1,580
Net cash provided by operating activities	33,240	38,693	11,822
Cash flows from investing activities [Abstract]
Purchases of equity securities	(117,913)	(211,218)	(143,987)
Proceeds from sale of equity securities	33	0	168
Net cash used in investing activities	(362,452)	(158,232)	(110,734)
Cash flows from financing activities [Abstract]
Cash dividends paid	(7,588)	(7,383)	(6,539)
Purchase of treasury stock	(1,279)	(1,374)	(2,122)
Sale of treasury stock to employee stock purchase plan	112	0	126
Net cash provided by financing activities	182,590	223,665	149,099
Net (decrease) increase in cash and cash equivalents	(146,622)	104,126	50,187
Cash and Cash Equivalents at Beginning of Year	172,833	68,707	18,520
Cash and Cash Equivalents at End of Year	26,211	172,833	68,707
Parent Company [Member]
Cash flows from operating activities [Abstract]
Net income	29,060	29,118	25,103
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]
Equity in undistributed earnings of subsidiaries	(22,135)	(20,744)	(9,685)
Investment securities losses (gains), net	219	(284)	23
Other, net	240	543	14
Net cash provided by operating activities	7,384	8,633	15,455
Cash flows from investing activities [Abstract]
Purchases of equity securities	(218)	0	(1,339)
Proceeds from sale of equity securities	33	0	168
Acquisition of Midcoast	0	0	(7,614)
Net cash used in investing activities	(185)	0	(8,785)
Cash flows from financing activities [Abstract]
Cash dividends paid	(7,588)	(7,383)	(6,539)
Issuance of subordinated debt	0	9,869	0
Purchase of treasury stock	(1,279)	(1,374)	(2,122)
Sale of treasury stock to employee stock purchase plan	112	0	126
Net cash provided by financing activities	(8,755)	1,112	(8,535)
Net (decrease) increase in cash and cash equivalents	(1,556)	9,745	(1,865)
Cash and Cash Equivalents at Beginning of Year	15,046	5,301	7,166
Cash and Cash Equivalents at End of Year	$ 13,490	$ 15,046	$ 5,301