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FAIR VALUES OF FINANCIAL INSTRUMENTS - Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Quoted Prices in Active Markets for Identical Assets (Level 1) | Single family residential |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other real estate owned | $ 0 | $ 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Single family residential mortgage |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans |  | 0
Significant Other Observable Inputs (Level 2) | Single family residential |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other real estate owned | 0 | 0
Significant Other Observable Inputs (Level 2) | SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 0 |
Significant Other Observable Inputs (Level 2) | Single family residential mortgage |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans |  | 0
Significant Unobservable Inputs (Level 3) | Single family residential |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other real estate owned | 1,415 | 2,502
Significant Unobservable Inputs (Level 3) | SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 174 |
Significant Unobservable Inputs (Level 3) | Single family residential mortgage |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans |  | 2,956
Carrying Value | Single family residential |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other real estate owned | 1,415 | 2,502
Carrying Value | SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | $ 174 |
Carrying Value | Single family residential mortgage |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans |  | $ 2,956

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