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ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY - Loans By Class Modified As Troubled Debt Restructuring (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Modified Repayment Terms |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans | 4 | 1 | 12
Extension period for modified repayment terms | 0 months |  |
Modified Repayment Terms | Minimum |  |  |
Financing Receivable, Modifications |  |  |
Extension period for modified repayment terms |  | 0 months | 0 months
Modified Repayment Terms | Maximum |  |  |
Financing Receivable, Modifications |  |  |
Extension period for modified repayment terms |  |  | 239 months
All Modifications [Member] |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans | 4 | 1 | 12
Pre-Modification Outstanding Recorded Investment | $ 6,066 | $ 35 | $ 7,183
Post-Modification Outstanding Recorded Investment | $ 5,533 | $ 35 | $ 7,182
Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member] | Modified Repayment Terms |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans | 1 | 1 | 1
Extension period for modified repayment terms | 0 months | 1 month | 0 months
Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member] | All Modifications [Member] |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans | 1 | 1 | 1
Pre-Modification Outstanding Recorded Investment | $ 250 | $ 35 | $ 600
Post-Modification Outstanding Recorded Investment | $ 315 | $ 35 | $ 600
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member] | Modified Repayment Terms |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans | 2 |  |
Extension period for modified repayment terms | 0 months |  |
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member] | Modified Repayment Terms | Minimum |  |  |
Financing Receivable, Modifications |  |  |
Extension period for modified repayment terms |  |  | 0 months
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member] | Modified Repayment Terms | Maximum |  |  |
Financing Receivable, Modifications |  |  |
Extension period for modified repayment terms |  |  | 6 months
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member] | All Modifications [Member] |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans | 2 |  | 7
Pre-Modification Outstanding Recorded Investment | $ 4,288 |  | $ 4,628
Post-Modification Outstanding Recorded Investment | $ 3,691 |  | $ 4,628
Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member] | Modified Repayment Terms |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans |  |  | 1
Extension period for modified repayment terms |  |  | 12 months
Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member] | All Modifications [Member] |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans |  |  | 1
Pre-Modification Outstanding Recorded Investment |  |  | $ 824
Post-Modification Outstanding Recorded Investment |  |  | $ 824
Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member] | Modified Repayment Terms |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans | 1 |  | 2
Extension period for modified repayment terms | 0 months |  | 12 months
Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member] | All Modifications [Member] |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans | 1 |  | 2
Pre-Modification Outstanding Recorded Investment | $ 1,528 |  | $ 933
Post-Modification Outstanding Recorded Investment | $ 1,527 |  | $ 933
Consumer 1-4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member] | Modified Repayment Terms |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans |  |  | 1
Extension period for modified repayment terms |  |  | 239 months
Consumer 1-4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member] | All Modifications [Member] |  |  |
Financing Receivable, Modifications |  |  |
Number of Loans |  |  | 1
Pre-Modification Outstanding Recorded Investment |  |  | $ 198
Post-Modification Outstanding Recorded Investment |  |  | $ 197

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