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INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Deferred Tax Assets, Gross [Abstract] |  |
Allowance for loan losses | $ 3,085 | $ 2,729
Deferred compensation | 3,242 | 3,333
Unrealized gain or loss on securities available for sale | 2,641 | 649
Unrealized gain or loss on derivatives | 685 | 853
Non-accrual interest | 374 | 273
Core deposit intangible |  | 0
Acquisition fair value adjustments | 3,171 | 4,000
Equity compensation | 335 | 297
Contract incentives | 1,658 | 594
Other | 217 | 417
Total | 15,408 | 13,145
Deferred Tax Liabilities, Gross [Abstract] |  |
Depreciation | 1,517 | 1,356
Deferred loan origination costs | 725 | 655
Branch acquisition costs and goodwill | 784 | 737
Core deposit intangible | 1,309 | 1,525
Prepaid expenses | 215 | 302
Interest rate cap premium amortization | 257 | 276
Mortgage servicing rights | 721 | 769
Prepaid pension | 366 | 345
Other |  | 0
Total | $ 5,894 | $ 5,965

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