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LOANS AND ALLOWANCE FOR LOAN LOSSES (COVID-19 Loan Modifications) (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 USD ($) loan | Dec. 31, 2020 loan
Financing Receivable, Impaired [Line Items] |  |
Financing Receivable, Modifications, Number of Contracts | loan | 0 | 0
COVID 19 - Impact |  |
Financing Receivable, Impaired [Line Items] |  |
Financing Receivable, Modifications, Number of Contracts | loan | 30 |
Loan Restructuring, Trial Modifications, Amount | $ 65.3 |
Percentage of Loans and Leases Receivable, Modified | 2.10% |
COVID 19 - Impact | Principal Payment Deferrals |  |
Financing Receivable, Impaired [Line Items] |  |
Loan Restructuring, Trial Modifications, Amount | $ 37.4 |
Percentage of Loans and Leases Receivable, Modified | 1.20% |
COVID 19 - Impact | Full Payment Deferrals |  |
Financing Receivable, Impaired [Line Items] |  |
Loan Restructuring, Trial Modifications, Amount | $ 27.9 |
Percentage of Loans and Leases Receivable, Modified | 0.90% |

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524 + Details
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