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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK - Narrative (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Fair Value Disclosures [Abstract]      
Reserve in other liabilities $ 784 $ 472  
Expensed (recovered) through noninterest expense for credit exposures 312 (13) $ (44)
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 35,678 44,124  
Limited recourse back on loans 1,029 8,230  
Charge to other expenses $ 18 $ 127 $ 71