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FAIR VALUES OF FINANCIAL INSTRUMENTS - Gains and (Losses) on Non-Recurring Assets (Detail) - Nonrecurring - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Impaired loans | Single family residential mortgage |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Gains and (losses) recognized on assets measured at fair value | $ 0 | $ (27) | $ (115) | $ (27)
Impaired loans | Commercial and industrial |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Gains and (losses) recognized on assets measured at fair value | (219) | 0 | (511) | 0
Impaired loans | SBA |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Gains and (losses) recognized on assets measured at fair value | 1 | (1) | (379) | (1)
Impaired loans | Other consumer |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Gains and (losses) recognized on assets measured at fair value | 0 | 0 | (141) |
Impaired loans | Construction |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Gains and (losses) recognized on assets measured at fair value | 0 | 0 | 0 | (29)
Other real estate owned | Single family residential |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Gains and (losses) recognized on assets measured at fair value | $ 35 | $ (264) | $ 229 | $ (236)

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