MORTGAGE BANKING ACTIVITIES - Key unobservable inputs used in determining the fair value (Details) - $ / LoanContracts	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Maximum [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
Discount Rates	15.00%	15.00%
Annual prepayment speeds	23.79%	23.64%
Cost of servicing (per loan)	73	110
Minimum [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
Discount Rates	11.00%	11.00%
Annual prepayment speeds	11.98%	13.08%
Cost of servicing (per loan)	60	90