INCOME TAXES - Summary of deferred tax assets and liabilities (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Allowance for loan losses	$ 605,257	$ 629,994
Deferred compensation	818,588	706,899
Directors’ and officers’ retirement plans	113,322	146,077
ESOP plans	56,603
Stock equity plans	75,659
Federal NOL carryforward	398,701
Depreciation	42,535	13,952
Charitable Foundation Contribution	552,997	691,365
Other	41,186	26,694
Deferred tax assets, gross	2,704,848	2,214,981
Deferred tax liabilities:
Loan fees/costs	633,792	537,069
Purchase accounting	182,992
Net unrealized gain on securities available for sale	6,709	39,324
Deferred tax liabilities, gross	823,493	576,393
Net deferred tax asset	$ 1,881,355	$ 1,638,588