INCOME TAXES - Summary of components of the net deferred tax asset and liabilities (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Deferred Tax Assets:
Allowance for loan losses	$ 1,823,000	$ 1,666,000
Provision for unfunded commitments	37,000	27,000
Deferred compensation	260,000	251,000
Contributions	8,000	0
Accrued rent expense	100,000	95,000
Operating lease liabilities	315,000	318,000
Finance lease liabilities	3,000	18,000
Limited partnership investments	283,000	252,000
Impairment loss on securities	4,000	4,000
Writedowns on OREO properties	0	2,000
Deferred health insurance	37,000	17,000
Capital and net operating loss carry forwards	438,000	88,000
Valuation allowance related to state net operating losses	(438,000)	(88,000)
Total	2,870,000	2,650,000
Deferred Tax Liabilities:
Net unrealized gains on debt securities available-for-sale	2,017,000	3,421,000
Loan fees and costs	164,000	171,000
Net unrealized gains on marketable equity securities	354,000	262,000
Operating lease right-of-use assets	315,000	318,000
Accumulated depreciation	300,000	307,000
Accretion	41,000	18,000
Mortgage servicing rights	53,000	42,000
Intangibles	257,000	257,000
Total	3,501,000	4,796,000
Net Deferred Tax Liability	$ (631,000)	$ (2,146,000)