ADVANCES FROM THE FEDERAL HOME LOAN BANK OF NEW YORK (FHLB) - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Federal Home Loan Banks [Abstract]
Fixed rate, term borrowings from FHLB	$ 185,500,000	$ 329,400,000
Extinguishment of FHLB borrowings	111,400,000	14,000,000
FHLB prepayment penalty	2,200,000	843,000
Investment securities and loans pledged to secure advances	319,900,000	423,500,000
FHLB advances	$ 185,500,000	$ 329,400,000
Weighted average fixed rate	0.92%	1.49%