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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Effect of Derivative Instruments on Statement of Income (Loss) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Economic undesignated hedges:      
Total gain (loss) on derivatives $ 187 $ (78) $ 164
Interest Income Loans [Member] | Interest Rate Swap [Member]      
Economic undesignated hedges:      
Total gain (loss) on derivatives 0 0 0
Interest Income Loans [Member] | Interest Rate Cap [Member]      
Economic undesignated hedges:      
Total gain (loss) on derivatives (2) 0 139
Mortgage Banking Activities [Member] | Forward Contracts [Member]      
Economic undesignated hedges:      
Total gain (loss) on derivatives $ 189 $ (78) $ 25