LOANS AND ALLOWANCE FOR CREDIT LOSSES ON LOANS (Activity in Allowance for Credit Losses on Loans by Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	$ 35,412	$ 36,983	$ 36,935	$ 36,922	$ 36,922
Charge-offs	(422)	(345)	(1,240)	(1,240)	(1,727)
Recoveries	141	225	412	437	566
Provision (credit) for loan losses	283	(456)	(693)	288	1,174
Ending Balance	35,414	36,407	35,414	36,407	36,935
Commercial real estate - non-owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	15,268	16,155	16,581	17,296	17,296
Charge-offs	0	0	0	0	0
Recoveries	1	17	9	19	19
Provision (credit) for loan losses	552	607	(769)	(536)	(734)
Ending Balance	15,821	16,779	15,821	16,779	16,581
Commercial real estate - owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	2,166	2,351	2,290	2,362	2,362
Charge-offs	0	(58)	0	(58)	(58)
Recoveries	0	0	0	0	0
Provision (credit) for loan losses	161	(131)	37	(142)	(14)
Ending Balance	2,327	2,162	2,327	2,162	2,290
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	5,407	4,795	4,869	5,446	5,446
Charge-offs	(394)	(255)	(1,157)	(1,101)	(1,560)
Recoveries	108	189	270	352	471
Provision (credit) for loan losses	(320)	(247)	819	(215)	512
Ending Balance	4,801	4,482	4,801	4,482	4,869
Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	9,571	10,627	10,254	9,089	9,089
Charge-offs	0	0	0	(18)	(18)
Recoveries	6	5	19	38	44
Provision (credit) for loan losses	(136)	(590)	(832)	933	1,139
Ending Balance	9,441	10,042	9,441	10,042	10,254
Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	2,311	2,397	2,217	2,225	2,225
Charge-offs	(1)	0	(1)	0	0
Recoveries	5	1	86	1	1
Provision (credit) for loan losses	(27)	(101)	(14)	71	(9)
Ending Balance	2,288	2,297	2,288	2,297	2,217
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	689	658	724	504	504
Charge-offs	(27)	(32)	(82)	(63)	(91)
Recoveries	21	13	28	27	31
Provision (credit) for loan losses	53	6	66	177	280
Ending Balance	$ 736	$ 645	$ 736	$ 645	$ 724