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DERIVATIVE INSTRUMENTS - Amount and Market Value of Mortgage Banking Derivatives (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Derivatives, Fair Value [Line Items]    
Notional Amount Assets $ 133,856 $ 103,812
Derivatives asset, fair values 2,366 1,534
Notional Amount Liability 133,856 103,812
Derivatives liability, fair values 2,529 1,600
Interest rate swaps and caps on loans    
Derivatives, Fair Value [Line Items]    
Notional Amount Assets 131,960 103,812
Derivatives asset, fair values 2,309 1,534
Notional Amount Liability 131,960 103,812
Derivatives liability, fair values 2,497 1,600
Foreign exchange contracts    
Derivatives, Fair Value [Line Items]    
Notional Amount Assets 1,896 0
Derivatives asset, fair values 57 0
Notional Amount Liability 1,896 0
Derivatives liability, fair values $ 32 $ 0