LOANS AND ALLOWANCE FOR CREDIT LOSSES ON LOANS (Loan Aging Analysis by Portfolio Segment) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans outstanding	$ 3,285,916	$ 3,219,822
Loans 90 Days Past Due and Accruing	0	0
Commercial real estate - non owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	1,127,200	1,097,975
Loans 90 Days Past Due and Accruing	0	0
Commercial real estate - owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	296,697	271,495
Loans 90 Days Past Due and Accruing		0
Commercial
Financing Receivable, Past Due [Line Items]
Loans outstanding	367,093	381,494
Loans 90 Days Past Due and Accruing	0	0
SBA PPP Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans outstanding	126,064	135,095
Loans 90 Days Past Due and Accruing	0	0
Residential Real Estate
Financing Receivable, Past Due [Line Items]
Loans outstanding	1,120,917	1,054,798
Loans 90 Days Past Due and Accruing	0	0
Home Equity
Financing Receivable, Past Due [Line Items]
Loans outstanding	228,690	258,573
Loans 90 Days Past Due and Accruing	0	0
Consumer
Financing Receivable, Past Due [Line Items]
Loans outstanding	19,255	20,392
Loans 90 Days Past Due and Accruing	0	0
Total Past Due
Financing Receivable, Past Due [Line Items]
Loans outstanding	4,669	8,787
Total Past Due | Commercial real estate - non owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	162	223
Total Past Due | Commercial real estate - owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	47	146
Total Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Loans outstanding	1,019	1,287
Total Past Due | SBA PPP Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans outstanding	0	0
Total Past Due | Residential Real Estate
Financing Receivable, Past Due [Line Items]
Loans outstanding	2,214	5,044
Total Past Due | Home Equity
Financing Receivable, Past Due [Line Items]
Loans outstanding	1,155	1,924
Total Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Loans outstanding	72	163
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans outstanding	1,042	2,362
30-59 Days Past Due | Commercial real estate - non owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	99	0
30-59 Days Past Due | Commercial real estate - owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	0	99
30-59 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Loans outstanding	183	430
30-59 Days Past Due | SBA PPP Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans outstanding	0	0
30-59 Days Past Due | Residential Real Estate
Financing Receivable, Past Due [Line Items]
Loans outstanding	489	1,406
30-59 Days Past Due | Home Equity
Financing Receivable, Past Due [Line Items]
Loans outstanding	236	335
30-59 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Loans outstanding	35	92
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans outstanding	164	1,393
60-89 Days Past Due | Commercial real estate - non owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	0	50
60-89 Days Past Due | Commercial real estate - owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	0	0
60-89 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Loans outstanding	0	0
60-89 Days Past Due | SBA PPP Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans outstanding	0	0
60-89 Days Past Due | Residential Real Estate
Financing Receivable, Past Due [Line Items]
Loans outstanding	155	1,103
60-89 Days Past Due | Home Equity
Financing Receivable, Past Due [Line Items]
Loans outstanding	0	173
60-89 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Loans outstanding	9	67
90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Loans outstanding	3,463	5,032
90 Days or Greater Past Due | Commercial real estate - non owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	63	173
90 Days or Greater Past Due | Commercial real estate - owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	47	47
90 Days or Greater Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Loans outstanding	836	857
90 Days or Greater Past Due | SBA PPP Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans outstanding	0	0
90 Days or Greater Past Due | Residential Real Estate
Financing Receivable, Past Due [Line Items]
Loans outstanding	1,570	2,535
90 Days or Greater Past Due | Home Equity
Financing Receivable, Past Due [Line Items]
Loans outstanding	919	1,416
90 Days or Greater Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Loans outstanding	28	4
Current
Financing Receivable, Past Due [Line Items]
Loans outstanding	3,281,247	3,211,035
Current | Commercial real estate - non owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	1,127,038	1,097,752
Current | Commercial real estate - owner-occupied
Financing Receivable, Past Due [Line Items]
Loans outstanding	296,650	271,349
Current | Commercial
Financing Receivable, Past Due [Line Items]
Loans outstanding	366,074	380,207
Current | SBA PPP Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans outstanding	126,064	135,095
Current | Residential Real Estate
Financing Receivable, Past Due [Line Items]
Loans outstanding	1,118,703	1,049,754
Current | Home Equity
Financing Receivable, Past Due [Line Items]
Loans outstanding	227,535	256,649
Current | Consumer
Financing Receivable, Past Due [Line Items]
Loans outstanding	$ 19,183	$ 20,229