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LOANS AND ALLOWANCE FOR LOAN LOSSES - Composition of Nonaccrual Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total | $ 43,354 | $ 21,585
NTM Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 13,019 | 0
Traditional Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 30,335 | 21,585
Commercial | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 19,114 | 5,455
Commercial | SBA |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 5,230 | 2,574
Commercial | NTM Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Commercial | NTM Loans | SBA |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Commercial | Traditional Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 19,114 | 5,455
Commercial | Traditional Loans | SBA |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 5,230 | 2,574
Consumer | Single family residential mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 18,625 | 12,929
Consumer | Other consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 385 | 627
Consumer | NTM Loans | Single family residential mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 13,019 | 0
Consumer | NTM Loans | Other consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Consumer | Traditional Loans | Single family residential mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 5,606 | 12,929
Consumer | Traditional Loans | Other consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Total | $ 385 | $ 627

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