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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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