ACCUMULATED OTHER COMPREHENSIVE LOSS - Summary of accumulated other comprehensive income (loss) (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 139,659,123	$ 147,576,211
Comprehensive income (loss)	746,532	(957,502)
Ending balance	139,086,259	145,025,932
Unrealized Gain and Losses on Available for Sale Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(6,499,666)	(289,814)
Other comprehensive (loss) income before reclassification	(114,092)	(2,399,988)
Comprehensive income (loss)	(114,092)	(2,399,988)
Ending balance	(6,613,758)	(2,689,802)
Dervatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	232,969
Other comprehensive (loss) income before reclassification	(115,537)
Comprehensive income (loss)	(115,537)
Ending balance	117,432
Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	55,684	17,158
Other comprehensive (loss) income before reclassification	(16,546)	41,589
Comprehensive income (loss)	(16,546)	41,589
Ending balance	39,138	58,747
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(6,211,013)	(272,656)
Other comprehensive (loss) income before reclassification	(246,175)	(2,358,399)
Comprehensive income (loss)	(246,175)	(2,358,399)
Ending balance	$ (6,457,188)	$ (2,631,055)