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ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY - Loans By Class Modified As Troubled Debt Restructuring (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 item | Sep. 30, 2018 USD ($) item | Sep. 30, 2019 USD ($) item | Sep. 30, 2018 USD ($) item
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Pre-Modification Outstanding Recorded Investment |  | $ 824 |  | $ 4,253
Post-Modification Outstanding Recorded Investment |  | $ 824 |  | $ 4,252
Modified Repayment Terms |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  | 2 | 1 | 8
Modified Repayment Terms | Minimum |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Extension period for modified repayment terms | 0 months |  | 0 months |
Modified Repayment Terms | Maximum |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Extension period for modified repayment terms |  | 6 months |  |
All Modifications |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item | 0 | 2 | 1 | 8
Non-working Capital Loans |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  | 2 |  |
Pre-Modification Outstanding Recorded Investment |  | $ 824 |  |
Post-Modification Outstanding Recorded Investment |  | $ 824 |  |
Non-working Capital Loans | Modified Repayment Terms | Minimum |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Extension period for modified repayment terms |  | 0 months |  |
Non-working Capital Loans | Modified Repayment Terms | Maximum |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Extension period for modified repayment terms |  | 6 months |  |
Commercial and Industrial Loans |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  |  | 3
Pre-Modification Outstanding Recorded Investment |  |  | $ 35 |
Post-Modification Outstanding Recorded Investment |  |  | $ 35 |
Commercial and Industrial Loans | All Modifications |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  | 2 |  |
Commercial and Industrial Loans | Working Capital Lines of Credit Loans |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  |  | 1
Pre-Modification Outstanding Recorded Investment |  |  |  | $ 600
Post-Modification Outstanding Recorded Investment |  |  |  | $ 600
Commercial and Industrial Loans | Working Capital Lines of Credit Loans | Modified Repayment Terms |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  |  | 1
Extension period for modified repayment terms |  |  |  | 0 months
Commercial and Industrial Loans | Non-working Capital Loans | Minimum |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Extension period for modified repayment terms |  |  |  | 0 years
Commercial and Industrial Loans | Non-working Capital Loans | Maximum |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Extension period for modified repayment terms |  |  |  | 6 months
Commercial and Industrial Loans | Non-working Capital Loans | Modified Repayment Terms |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  | 1 | 4
Commercial and Industrial Loans | Non-working Capital Loans | Modified Repayment Terms | Minimum |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Extension period for modified repayment terms | 0 months |  |  |
Commercial and Industrial Loans | Non-working Capital Loans | All Modifications |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  | 1 | 4
Pre-Modification Outstanding Recorded Investment |  |  |  | $ 2,244
Post-Modification Outstanding Recorded Investment |  |  |  | $ 2,244
Commercial and Industrial Loans | Owner Occupied Loans |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Pre-Modification Outstanding Recorded Investment |  |  | $ 35 |
Post-Modification Outstanding Recorded Investment |  |  | $ 35 |
Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  |  | 1
Pre-Modification Outstanding Recorded Investment |  |  |  | $ 824
Post-Modification Outstanding Recorded Investment |  |  |  | $ 824
Extension period for modified repayment terms |  |  |  | 12 months
Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans | Modified Repayment Terms |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  |  | 1
Extension period for modified repayment terms |  |  |  | 12 months
Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans | All Modifications |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  |  | 1
Pre-Modification Outstanding Recorded Investment |  |  |  | $ 387
Post-Modification Outstanding Recorded Investment |  |  |  | $ 387
Consumer 1-4 Family Mortgage Loans |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  |  | 3
Consumer 1-4 Family Mortgage Loans | Closed End First Mortgage Loans | Minimum |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Extension period for modified repayment terms |  |  |  | 0 months
Consumer 1-4 Family Mortgage Loans | Closed End First Mortgage Loans | Maximum |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Extension period for modified repayment terms |  |  |  | 239 months
Consumer 1-4 Family Mortgage Loans | Closed End First Mortgage Loans | Modified Repayment Terms |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  |  | 1
Consumer 1-4 Family Mortgage Loans | Closed End First Mortgage Loans | All Modifications |  |  |  |
Troubled Debt Restructurings Modified During Period [Abstract] |  |  |  |
Number of Loans | item |  |  |  | 1
Pre-Modification Outstanding Recorded Investment |  |  |  | $ 198
Post-Modification Outstanding Recorded Investment |  |  |  | $ 197
Extension period for modified repayment terms |  |  |  | 239 months

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