FAIR VALUE - Summary of information about the fair value carrying amount and unpaid principal outstanding of loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Total Loans
Fair Value Carrying Amount	$ 26,014	$ 32,989
Unpaid Principal Balance	25,754	33,318
Difference	260	(329)
Non Accruals
Fair Value Carrying Amount	136	298
Unpaid Principal Balance	140	646
Difference	(4)	(348)
90 Days or More Past Due
Fair Value Carrying Amount	136	298
Unpaid Principal Balance	140	646
Difference	(4)	(348)
Mortgage loans held for sale
Total Loans
Fair Value Carrying Amount	21,806	25,455
Unpaid Principal Balance	21,436	25,217
Difference	370	238
Non Accruals
Fair Value Carrying Amount	0	0
Unpaid Principal Balance	0	0
Difference	0	0
90 Days or More Past Due
Fair Value Carrying Amount	0	0
Unpaid Principal Balance	0	0
Difference	0	0
Loans held for sale
Total Loans
Fair Value Carrying Amount		251
Unpaid Principal Balance		594
Difference		(343)
Non Accruals
Fair Value Carrying Amount		251
Unpaid Principal Balance		594
Difference		(343)
90 Days or More Past Due
Fair Value Carrying Amount		251
Unpaid Principal Balance		594
Difference		(343)
Loans held for investment
Total Loans
Fair Value Carrying Amount	4,208	7,283
Unpaid Principal Balance	4,318	7,507
Difference	(110)	(224)
Non Accruals
Fair Value Carrying Amount	136	47
Unpaid Principal Balance	140	52
Difference	(4)	(5)
90 Days or More Past Due
Fair Value Carrying Amount	136	47
Unpaid Principal Balance	140	52
Difference	$ (4)	$ (5)