COMMITMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES - Interest Rate Ranges On Commitments And Open Ended Revolving Lines Of Credit (Details)	Dec. 31, 2020	Dec. 31, 2019
Commercial loan | Minimum
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	1.00%	0.75%
Variable Rate	1.16%	2.65%
Commercial loan | Maximum
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	14.50%	14.50%
Variable Rate	9.25%	9.25%
Real estate mortgage loans | Minimum
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	2.63%	3.13%
Variable Rate	3.00%	3.75%
Real estate mortgage loans | Maximum
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	3.75%	4.00%
Variable Rate	5.75%	4.25%
Consumer loan open-ended revolving lines
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	15.00%	15.00%
Consumer loan open-ended revolving lines | Minimum
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Variable Rate	3.00%	3.88%
Consumer loan open-ended revolving lines | Maximum
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Variable Rate	15.00%	15.00%