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DERIVATIVE INSTRUMENTS - Schedule of Fair Value Hedge Relationships (Detail) - USD ($)
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Derivative [Line Items]    
Notional Amount $ 101,205,000  
Fair Value Hedge    
Derivative [Line Items]    
Weighted Average Remaining Maturity (In Years) 6 years 6 months 18 days  
Weighted Average Pay Rate 2.527%  
Notional Amount $ 101,205,000 $ 101,205,000
Estimated Fair Value $ 13,362,000 4,954,000
Cash Flow Hedge    
Derivative [Line Items]    
Weighted Average Remaining Maturity (In Years) 2 years 1 month 6 days  
Weighted Average Pay Rate 2.232%  
Notional Amount $ 100,000,000 100,000,000
Estimated Fair Value $ 3,933,000 $ 1,592,000