LOANS AND ALLOWANCE FOR LOAN LOSSES - Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Composition of loan portfolio [Abstract]
Loans, net of deferred loan fees	$ 1,580,949	$ 1,536,463
Interest receivable on loans	5,035	5,035
Total ending loans balance	1,585,984	1,541,498
Commercial and industrial
Composition of loan portfolio [Abstract]
Payroll Protection Program Loans - CARES Act	186,100	150,900
Commercial and Agricultural
Composition of loan portfolio [Abstract]
Total ending loans balance	400,719	370,252
Commercial and Agricultural \| Commercial and industrial
Composition of loan portfolio [Abstract]
Loans, net of deferred loan fees	398,923	368,663
Total ending loans balance	400,281	369,968
Commercial and Agricultural \| Agricultural
Composition of loan portfolio [Abstract]
Loans, net of deferred loan fees	436	283
Total ending loans balance	438	284
Commercial mortgages:
Composition of loan portfolio [Abstract]
Total ending loans balance	731,438	719,145
Commercial mortgages: \| Construction
Composition of loan portfolio [Abstract]
Loans, net of deferred loan fees	58,326	61,945
Total ending loans balance	58,525	62,164
Commercial mortgages: \| Commercial mortgages
Composition of loan portfolio [Abstract]
Loans, net of deferred loan fees	670,628	654,663
Total ending loans balance	672,913	656,981
Residential mortgages
Composition of loan portfolio [Abstract]
Loans, net of deferred loan fees	245,231	239,401
Total ending loans balance	245,843	240,013
Consumer loans:
Composition of loan portfolio [Abstract]
Total ending loans balance	207,984	212,088
Consumer loans: \| Home equity lines and loans
Composition of loan portfolio [Abstract]
Loans, net of deferred loan fees	74,868	78,547
Total ending loans balance	75,081	78,761
Consumer loans: \| Indirect consumer loans
Composition of loan portfolio [Abstract]
Loans, net of deferred loan fees	120,881	120,538
Total ending loans balance	121,197	120,853
Consumer loans: \| Direct consumer loans
Composition of loan portfolio [Abstract]
Loans, net of deferred loan fees	11,656	12,423
Total ending loans balance	$ 11,706	$ 12,474

Financing Receivable, after Interest Receivable on Loans, before Allowance on Credit Loss

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- Definition

Financing Receivable, Payroll Protection Program Loans - CARES Act

+ References

No definition available.

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
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- References

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- Definition

Amount, before allowance for credit loss, of financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
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