BORROWED FUNDS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Other eligible assets pledged as collateral	$ 2,070,000
FHLBNY advances	9,100		$ 4,400
Interest expense on federal home loan bank and federal reserve bank advances,	0	$ 3,000
Other Borrowings	69,135		234,381
Interest expense	3,006	3,821
Bank Term Funding Program
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Other Borrowings	$ 60,000		$ 230,000
Weighted average interest rate	4.71%		4.50%
Interest expense	$ 2,400	$ 200
Compromised Securities
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Other eligible assets pledged as collateral	395,100
Mortgage-related
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Other eligible assets pledged as collateral	$ 1,670,000