INCOME TAXES - Deferred tax assets and liabilities (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
DEFERRED TAX ASSETS:
Allowance for credit losses - loans	$ 2,757,000	$ 2,922,000
Allowance for credit losses - securities	19,000	94,000
Allowance for credit losses - unfunded commitments	71,000	203,000
Unrealized investment security losses	2,088,000	3,544,000
Premises and equipment	765,000	912,000
Lease liabilities	825,000	895,000
Net operating loss	448,000	469,000
Interest rate hedges	25,000	36,000
Other	157,000	173,000
Total tax assets	7,155,000	9,248,000
DEFERRED TAX LIABILITIES:
Investment accretion	(161,000)	(129,000)
Lease right-of-use assets	(735,000)	(815,000)
Accrued pension obligation	(7,591,000)	(6,602,000)
Other	(304,000)	(290,000)
Total tax liabilities	(8,791,000)	(7,836,000)
Net deferred tax (liability) asset	(1,636,000)
Net deferred tax (liability) asset		1,412,000
Valuation Allowance	0	$ 0
Unrecognized tax benefits	$ 0