NET LOANS RECEIVABLE - Others (Details) - USD ($)	Jun. 30, 2022	Jun. 30, 2021
NET LOANS RECEIVABLE
Residential mortgage loans serviced by the Bank for unrelated third parties	$ 17,300,000	$ 20,100,000
Unamortized balance of mortgage servicing rights	148,000	170,000
Mortgage servicing rights, valuation reserve	0	0
Escrow funds in trust on loans serviced for others	437,000	493,000
Residential mortgage, home equity and commercial loans
NET LOANS RECEIVABLE
Pledged loans receivable as collateral for FHLBNY borrowings and stand-by letters of credit	377,100,000	429,700,000
Residential mortgages
NET LOANS RECEIVABLE
Loans in process of foreclosure	$ 1,500,000	$ 2,000,000.0