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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK - Narrative (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Fair Value Disclosures [Abstract]    
Reserve in other liabilities $ 998 $ 816
MPF Program    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total outstanding balance of loans sold under the MPF Program 30,149 31,977
Limited recourse back on loans $ 1,186 $ 1,135