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ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) - Summary of Advances from FHLB (Parenthetical) (Detail) - Weighted Average [Member]
Jun. 30, 2017
Dec. 31, 2016
long term debt [member]    
Short Term Debt [Line Items]    
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End 1.61% 1.49%
short term debt [member]    
Short Term Debt [Line Items]    
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End 1.32% 0.78%