LOANS AND CREDIT QUALITY (Class and Credit Indicator) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Recorded investment in the loans and leases, by class and credit indicator
2021	$ 796,186	$ 1,353,673
2020	1,063,047	690,783
2019	606,094	504,631
2018	438,371	438,649
2017	376,347	364,528
Prior	1,136,048	940,544
Amortized Cost of Revolving Loans	661,225	671,305
Total	5,077,318	4,964,113
Loans and leases, gross	5,092,373	4,972,004
Net deferred fees	(15,055)	(7,891)
Total loans, net of allowance for credit losses	5,077,318	4,964,113
Pass
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	4,949,298	4,779,727
Special Mention
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	100,902	142,499
Substandard
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	42,170	49,730
Loss
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	3	48
Small Business Administration Paycheck Protection Program \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
2021	274,947	416,375
2020	159,663	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Amortized Cost of Revolving Loans	0	0
Total	434,610	416,375
Loans and leases, gross	450,471	425,993
Net deferred fees	(15,861)	(9,618)
Total loans, net of allowance for credit losses	434,610	416,375
Small Business Administration Paycheck Protection Program \| Pass \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
2021	274,947	416,375
2020	159,663	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Amortized Cost of Revolving Loans	0	0
Total	434,610	416,375
Loans and leases, gross	450,471	425,993
Small Business Administration Paycheck Protection Program \| Special Mention \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	0	0
Small Business Administration Paycheck Protection Program \| Substandard \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	0	0
Small Business Administration Paycheck Protection Program \| Loss \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	0	0
Other \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
2021	43,686	96,346
2020	72,212	72,619
2019	63,633	68,650
2018	63,704	74,826
2017	56,205	43,463
Prior	121,353	106,302
Amortized Cost of Revolving Loans	65,432	82,885
Total	486,225	545,091
Loans and leases, gross	486,331	545,136
Net deferred fees	(106)	(45)
Total loans, net of allowance for credit losses	486,225	545,091
Other \| Pass \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
2021	42,540	86,456
2020	65,657	55,660
2019	51,256	61,314
2018	59,386	47,672
2017	44,416	39,337
Prior	110,922	98,136
Amortized Cost of Revolving Loans	65,432	82,465
Total	439,609	471,040
Loans and leases, gross	439,715	471,085
Other \| Special Mention \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
2021	946	9,690
2020	6,466	16,120
2019	11,638	6,293
2018	3,344	26,109
2017	11,442	1,556
Prior	7,744	6,989
Amortized Cost of Revolving Loans	0	420
Total	41,580	67,177
Loans and leases, gross	41,580	67,177
Other \| Substandard \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
2021	200	200
2020	89	839
2019	739	1,043
2018	974	1,045
2017	347	2,570
Prior	2,687	1,177
Amortized Cost of Revolving Loans	0	0
Total	5,036	6,874
Loans and leases, gross	5,036	6,874
Other \| Loss \| Commercial Financial And Agricultural
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	0	0
Construction \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	6,806	22,491
2020	26,915	29,518
2019	33,143	39,633
2018	35,217	9,365
2017	6,262	2,163
Prior	20,765	19,138
Amortized Cost of Revolving Loans	4,349	3,099
Total	133,457	125,407
Loans and leases, gross	133,808	125,625
Net deferred fees	(351)	(218)
Total loans, net of allowance for credit losses	133,457	125,407
Construction \| Pass \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	6,806	22,491
2020	26,915	29,518
2019	33,143	36,790
2018	34,288	9,365
2017	6,262	2,163
Prior	20,765	19,138
Amortized Cost of Revolving Loans	4,349	3,099
Total	132,528	122,564
Loans and leases, gross	132,879	122,782
Construction \| Special Mention \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	0	0
2020	0	0
2019	0	2,843
2018	929	0
2017	0	0
Prior	0	0
Amortized Cost of Revolving Loans	0	0
Total	929	2,843
Loans and leases, gross	929	2,843
Construction \| Substandard \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	0	0
Construction \| Loss \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	0	0
Residential Mortgage \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	300,519	557,476
2020	522,890	276,645
2019	215,763	128,027
2018	98,683	137,689
2017	115,061	182,305
Prior	458,885	408,070
Amortized Cost of Revolving Loans	0	0
Total	1,711,801	1,690,212
Loans and leases, gross	1,709,885	1,687,251
Net deferred fees	1,916	2,961
Total loans, net of allowance for credit losses	1,711,801	1,690,212
Residential Mortgage \| Pass \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	300,519	556,479
2020	521,905	276,645
2019	215,065	127,490
2018	97,573	136,307
2017	114,308	180,782
Prior	454,665	406,020
Amortized Cost of Revolving Loans	0	0
Total	1,704,035	1,683,723
Loans and leases, gross	1,702,119	1,680,762
Residential Mortgage \| Special Mention \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	0	997
2020	985	0
2019	0	0
2018	0	597
2017	0	142
Prior	0	0
Amortized Cost of Revolving Loans	0	0
Total	985	1,736
Loans and leases, gross	985	1,736
Residential Mortgage \| Substandard \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	0	0
2020	0	0
2019	698	537
2018	1,110	785
2017	753	1,381
Prior	4,220	2,050
Amortized Cost of Revolving Loans	0	0
Total	6,781	4,753
Loans and leases, gross	6,781	4,753
Residential Mortgage \| Loss \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	0	0
Home Equity \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	11,579	17,582
2020	15,508	15,851
2019	12,325	15,567
2018	13,048	679
2017	502	1,223
Prior	28,071	4,916
Amortized Cost of Revolving Loans	502,397	495,448
Total	583,430	551,266
Loans and leases, gross	582,143	550,216
Net deferred fees	1,287	1,050
Total loans, net of allowance for credit losses	583,430	551,266
Home Equity \| Pass \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	11,579	17,582
2020	15,258	15,851
2019	12,325	15,567
2018	13,048	679
2017	502	1,023
Prior	27,637	4,592
Amortized Cost of Revolving Loans	502,011	494,741
Total	582,360	550,035
Loans and leases, gross	581,073	548,985
Home Equity \| Special Mention \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	0	0
2020	250	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Amortized Cost of Revolving Loans	386	707
Total	636	707
Loans and leases, gross	636	707
Home Equity \| Substandard \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	200
Prior	434	324
Amortized Cost of Revolving Loans	0	0
Total	434	524
Loans and leases, gross	434	524
Home Equity \| Loss \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	0	0
Commercial Mortgage \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	46,626	130,448
2020	143,824	148,056
2019	158,447	174,166
2018	168,616	171,471
2017	166,833	117,927
Prior	487,013	398,060
Amortized Cost of Revolving Loans	15,071	16,200
Total	1,186,430	1,156,328
Loans and leases, gross	1,188,244	1,158,203
Net deferred fees	(1,814)	(1,875)
Total loans, net of allowance for credit losses	1,186,430	1,156,328
Commercial Mortgage \| Pass \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	46,626	130,448
2020	143,824	144,244
2019	149,049	123,519
2018	136,564	166,618
2017	161,017	104,381
Prior	448,019	363,837
Amortized Cost of Revolving Loans	15,071	16,200
Total	1,100,170	1,049,247
Loans and leases, gross	1,101,984	1,051,122
Commercial Mortgage \| Special Mention \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	0	0
2020	0	2,021
2019	7,627	31,647
2018	20,552	2,919
2017	4,007	13,546
Prior	24,586	19,653
Amortized Cost of Revolving Loans	0	0
Total	56,772	69,786
Loans and leases, gross	56,772	69,786
Commercial Mortgage \| Substandard \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
2021	0	0
2020	0	1,791
2019	1,771	19,000
2018	11,500	1,934
2017	1,809	0
Prior	14,408	14,570
Amortized Cost of Revolving Loans	0	0
Total	29,488	37,295
Loans and leases, gross	29,488	37,295
Commercial Mortgage \| Loss \| Real Estate
Recorded investment in the loans and leases, by class and credit indicator
Loans and leases, gross	0	0
Consumer \| Consumer
Recorded investment in the loans and leases, by class and credit indicator
2021	112,023	112,955
2020	122,035	148,094
2019	122,783	78,588
2018	59,103	44,619
2017	31,484	17,447
Prior	19,961	4,058
Amortized Cost of Revolving Loans	73,976	73,673
Total	541,365	479,434
Loans and leases, gross	541,491	479,580
Net deferred fees	(126)	(146)
Total loans, net of allowance for credit losses	541,365	479,434
Consumer \| Pass \| Consumer
Recorded investment in the loans and leases, by class and credit indicator
2021	112,023	112,955
2020	121,960	147,940
2019	122,660	78,486
2018	59,031	44,571
2017	31,465	17,445
Prior	19,816	4,032
Amortized Cost of Revolving Loans	73,976	73,423
Total	540,931	478,852
Loans and leases, gross	541,057	478,998
Consumer \| Special Mention \| Consumer
Recorded investment in the loans and leases, by class and credit indicator
2021		0
2020		0
2019		0
2018		0
2017		0
Prior		0
Amortized Cost of Revolving Loans		250
Total		250
Loans and leases, gross	0	250
Consumer \| Substandard \| Consumer
Recorded investment in the loans and leases, by class and credit indicator
2021	0	0
2020	75	138
2019	123	102
2018	72	22
2017	19	0
Prior	142	22
Amortized Cost of Revolving Loans	0	0
Total	431	284
Loans and leases, gross	431	284
Consumer \| Loss \| Consumer
Recorded investment in the loans and leases, by class and credit indicator
2021	0	0
2020	0	16
2019	0	0
2018	0	26
2017	0	2
Prior	3	4
Amortized Cost of Revolving Loans	0	0
Total	3	48
Loans and leases, gross	$ 3	$ 48

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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