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LOANS AND ALLOWANCE FOR LOAN LOSSES - Components of Troubled Debt Restructured Loans and Leases (Detail) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | $ 21,404 | $ 8,021
NTM Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 2,940 | 2,962
Traditional Loans and Leases |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 18,464 | 5,059
Commercial | Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 15,790 | 2,276
Commercial | SBA |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 266 | 187
Commercial | NTM Loans | Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 0 | 0
Commercial | NTM Loans | SBA |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 0 | 0
Commercial | Traditional Loans and Leases | Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 15,790 | 2,276
Commercial | Traditional Loans and Leases | SBA |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 266 | 187
Consumer | Single family residential mortgage |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 5,054 | 5,264
Consumer | Other consumer |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 294 | 294
Consumer | NTM Loans | Single family residential mortgage |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 2,646 | 2,668
Consumer | NTM Loans | Other consumer |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 294 | 294
Consumer | Traditional Loans and Leases | Single family residential mortgage |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | 2,408 | 2,596
Consumer | Traditional Loans and Leases | Other consumer |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loans and leases | $ 0 | $ 0

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