DERIVATIVE FINANCIAL INSTRUMENTS - Interest rate floor positions (Details) - Interest Rate Floor [Member] $ in Thousands	Mar. 31, 2021 USD ($)
Derivatives, Fair Value [Line Items]
Notional Amount	$ 150,000
Cost Basis	$ 1,015
Derivative Floor Interest Rate	0.94%
Derivative Asset, Fair Value, Gross Asset	$ 2,399
Thirty Year Vs Five Year [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	70,000
Cost Basis	$ 511
Derivative Floor Interest Rate	0.76%
Derivative Asset, Fair Value, Gross Asset	$ 1,435
Ten Year Vs Two Year [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	80,000
Cost Basis	$ 504
Derivative Floor Interest Rate	1.10%
Derivative Asset, Fair Value, Gross Asset	$ 964