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LOANS - PCI Loans - Unpaid Balance and Carrying Amount (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |
Impaired Financing Receivable, Unpaid Principal Balance | $ 18,323 | $ 20,739
Financing Receivable, Nonaccrual | 15,610 | 17,332
Commercial Portfolio Segment |  |
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 1,000 | 1,225
Financing Receivable, Nonaccrual | 622 | 544
Construction and Land Portfolio Segment |  |
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 100 | 338
Financing Receivable, Nonaccrual | 51 | 223
Commercial Real Estate Portfolio Segment |  |
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 14,096 | 15,930
Financing Receivable, Nonaccrual | 12,416 | 14,105
Residential Portfolio Segment |  |
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 3,127 | 3,238
Financing Receivable, Nonaccrual | $ 2,521 | 2,458
Consumer Portfolio Segment |  |
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |
Impaired Financing Receivable, Unpaid Principal Balance |  | 8
Financing Receivable, Nonaccrual |  | $ 2

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