INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Deferred tax assets, net	$ 1,745	$ 3,865
Deferred Tax Assets, Gross [Abstract]
Allowance for loan losses	4,464	3,507
Deferred compensation	4,129	3,383
Unrealized gain or loss on derivatives	623	307
Non-accrual interest	492	381
Acquisition fair value adjustments	1,833	2,223
Equity compensation	432	468
Contract incentives	1,017	1,167
Lease liability	2,487	2,273
Other	116	167
Total	15,593	13,876
Deferred Tax Liabilities, Gross [Abstract]
Unrealized gain or loss on securities available for sale	4,404	1,858
Depreciation	2,261	1,722
Deferred loan origination costs	1,190	862
Branch acquisition costs and goodwill	1,034	712
Core deposit intangible	1,078	1,231
Prepaid expenses	301	311
Mortgage servicing rights	784	703
Prepaid pension	377	359
Right of use asset	2,419	2,253
Total	$ 13,848	$ 10,011

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Deferred Tax Assets, Interest On Nonaccrual Loans

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Deferred Tax Assets, Operating Lease, Liability

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Deferred Tax Liabilities, Prepaid Pension

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from derivative instruments.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the provision for loan losses.

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Amount of deferred tax liability attributable to taxable temporary differences from financing arrangements.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from leasing arrangements.

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Amount of deferred tax liability attributable to taxable temporary differences from mortgage servicing rights.

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Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains on trading securities.

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