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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Impact of Adoption (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	$ 2,562,885	$ 2,531,910
Total allowance for credit losses on loans	19,082	22,718	$ 15,353	$ 13,866
Decrease to retained earnings	195,607	215,592
Tax exempt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	47,862	41,280
Total allowance for credit losses on loans	58	86	67
Home equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	100,096	86,657
Total allowance for credit losses on loans	285	814	320
Total commercial loans | Construction and land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	117,882	56,263
Total allowance for credit losses on loans	824	2,111	317
Total commercial real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	1,084,381
Total allowance for credit losses on loans			7,815	6,984
Total commercial real estate | Commercial real estate owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	219,217	257,122
Total allowance for credit losses on loans	1,783	2,751	2,368
Total commercial real estate | Commercial real estate non-owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	716,776	887,092
Total allowance for credit losses on loans	7,864	5,650	4,695
Total commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	441,069
Total allowance for credit losses on loans			3,614	2,415
Total commercial and industrial | Commercial real estate non-owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans		887,092
Total commercial and industrial | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	355,684	307,112
Total allowance for credit losses on loans	3,137	5,369	3,262
Total residential real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans			3,545	4,059
Total residential real estate | Residential mortgages
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	995,216	888,263
Total allowance for credit losses on loans	5,010	5,862	4,213
Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans			379	$ 408
Total consumer | Other consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	10,152	8,121
Total allowance for credit losses on loans	121	$ 75	$ 111
Cumulative Effect, Period of Adoption, Adjusted Balance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	2,562,885
Total allowance for credit losses on loans	24,310
Allowance for credit losses on OBS credit exposures	1,975
Total allowance for credit losses	26,285
Cumulative Effect, Period of Adoption, Adjusted Balance | Construction and land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	117,882
Total allowance for credit losses on loans	2,020
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial real estate owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	219,217
Total allowance for credit losses on loans	2,491
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial real estate non-owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	716,776
Total allowance for credit losses on loans	5,856
Cumulative Effect, Period of Adoption, Adjusted Balance | Tax exempt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	47,862
Total allowance for credit losses on loans	98
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	355,684
Total allowance for credit losses on loans	6,133
Cumulative Effect, Period of Adoption, Adjusted Balance | Residential mortgages
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	995,216
Total allowance for credit losses on loans	6,742
Cumulative Effect, Period of Adoption, Adjusted Balance | Home equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	100,096
Total allowance for credit losses on loans	888
Cumulative Effect, Period of Adoption, Adjusted Balance | Other consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	10,152
Total allowance for credit losses on loans	82
impact of ASC 326
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	5,228
impact of ASC 326 | Tax exempt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	40
impact of ASC 326 | Home equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	603
impact of ASC 326 | Total commercial loans | Construction and land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	1,196
impact of ASC 326 | Total commercial real estate | Commercial real estate owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	708
impact of ASC 326 | Total commercial real estate | Commercial real estate non-owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	(2,008)
impact of ASC 326 | Total commercial and industrial | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	2,996
impact of ASC 326 | Total residential real estate | Residential mortgages
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	1,732
impact of ASC 326 | Total consumer | Other consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	(39)
Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	2,562,885
Total allowance for credit losses on loans	19,082
Allowance for credit losses on OBS credit exposures	359
Total allowance for credit losses	19,441
Accounting Standards Update 2016-13 | Construction and land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	117,882
Total allowance for credit losses on loans	824
Accounting Standards Update 2016-13 | Commercial real estate owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	219,217
Total allowance for credit losses on loans	1,783
Accounting Standards Update 2016-13 | Commercial real estate non-owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	716,776
Total allowance for credit losses on loans	7,864
Accounting Standards Update 2016-13 | Tax exempt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	47,862
Total allowance for credit losses on loans	58
Accounting Standards Update 2016-13 | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	355,684
Total allowance for credit losses on loans	3,137
Accounting Standards Update 2016-13 | Residential mortgages
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	995,216
Total allowance for credit losses on loans	5,010
Accounting Standards Update 2016-13 | Home equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	100,096
Total allowance for credit losses on loans	285
Accounting Standards Update 2016-13 | Other consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	10,152
Total allowance for credit losses on loans	121
Accounting Standards Update 2016-13 | impact of ASC 326
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	5,228
Allowance for credit losses on OBS credit exposures	1,616
Total allowance for credit losses	6,844
Total increase in Allowance for credit losses	6,844
Tax effect	(1,602)
Decrease to retained earnings	5,242
Accounting Standards Update 2016-13 | impact of ASC 326 | Construction and land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	1,196
Accounting Standards Update 2016-13 | impact of ASC 326 | Commercial real estate owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	708
Accounting Standards Update 2016-13 | impact of ASC 326 | Commercial real estate non-owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	(2,008)
Accounting Standards Update 2016-13 | impact of ASC 326 | Tax exempt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	40
Accounting Standards Update 2016-13 | impact of ASC 326 | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	2,996
Accounting Standards Update 2016-13 | impact of ASC 326 | Residential mortgages
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	1,732
Accounting Standards Update 2016-13 | impact of ASC 326 | Home equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	603
Accounting Standards Update 2016-13 | impact of ASC 326 | Other consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance for credit losses on loans	(39)
Accounting Standards Update 2016-13 | As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	2,562,885
Total allowance for credit losses on loans	19,082
Allowance for credit losses on OBS credit exposures	359
Total allowance for credit losses	19,441
Accounting Standards Update 2016-13 | As Reported | Construction and land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	131,123
Total allowance for credit losses on loans	1,044
Accounting Standards Update 2016-13 | As Reported | Commercial real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	953,258
Total allowance for credit losses on loans	10,199
Accounting Standards Update 2016-13 | As Reported | Tax exempt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	63,431
Total allowance for credit losses on loans	80
Accounting Standards Update 2016-13 | As Reported | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	377,638
Total allowance for credit losses on loans	3,302
Accounting Standards Update 2016-13 | As Reported | Residential mortgages
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	923,891
Total allowance for credit losses on loans	4,078
Accounting Standards Update 2016-13 | As Reported | Home equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	102,464
Total allowance for credit losses on loans	258
Accounting Standards Update 2016-13 | As Reported | Other consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	11,080
Total allowance for credit losses on loans	121
Accounting Standards Update 2016-13 | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Construction and land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	(13,241)
Total allowance for credit losses on loans	(220)
Accounting Standards Update 2016-13 | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Commercial real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	(953,258)
Total allowance for credit losses on loans	(10,199)
Accounting Standards Update 2016-13 | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Commercial real estate owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	219,217
Total allowance for credit losses on loans	1,783
Accounting Standards Update 2016-13 | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Commercial real estate non-owner occupied
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	716,776
Total allowance for credit losses on loans	7,864
Accounting Standards Update 2016-13 | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Tax exempt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	(15,569)
Total allowance for credit losses on loans	(22)
Accounting Standards Update 2016-13 | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	(21,954)
Total allowance for credit losses on loans	(165)
Accounting Standards Update 2016-13 | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Residential mortgages
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	71,325
Total allowance for credit losses on loans	932
Accounting Standards Update 2016-13 | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Home equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	(2,368)
Total allowance for credit losses on loans	27
Accounting Standards Update 2016-13 | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Other consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	$ (928)

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Name:	srt_RestatementAxis=srt_RevisionOfPriorPeriodAccountingStandardsUpdateAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: