SECURITIES HELD TO MATURITY - Summary of debt securities held to maturity and unrealized loss position (Detail) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Marketable Securities [Line Items]
Fair Value, Less Than 12 Months	$ 46,213,964	$ 26,164,482
Unrealized Losses, Less Than 12 Months	(2,058,232)	(397,491)
Fair Value, 12 Months or More	11,394,327	7,354,709
Unrealized Losses, 12 Months or More	(1,108,352)	(397,195)
Fair Value, Total	57,608,291	33,519,191
Unrealized Losses, Total	(3,166,584)	(794,686)
U.S. Government and Agency Obligations
Marketable Securities [Line Items]
Fair Value, Less Than 12 Months	12,822,880
Unrealized Losses, Less Than 12 Months	(177,120)
Fair Value, Total	12,822,880
Unrealized Losses, Total	(177,120)
Corporate Bonds
Marketable Securities [Line Items]
Fair Value, Less Than 12 Months	3,500,000	3,710,120
Unrealized Losses, Less Than 12 Months	(154,095)	(39,870)
Fair Value, 12 Months or More	750,000
Unrealized Losses, 12 Months or More	(56,250)
Fair Value, Total	4,250,000	3,710,120
Unrealized Losses, Total	(210,345)	(39,870)
Municipal Bonds
Marketable Securities [Line Items]
Fair Value, Less Than 12 Months	5,584,593	3,835,309
Unrealized Losses, Less Than 12 Months	(257,698)	(18,175)
Fair Value, Total	5,584,593	3,835,309
Unrealized Losses, Total	(257,698)	(18,175)
MBSs - residential
Marketable Securities [Line Items]
Fair Value, Less Than 12 Months	8,812,437	10,720,544
Unrealized Losses, Less Than 12 Months	(473,815)	(141,726)
Fair Value, 12 Months or More	5,704,579	2,701,345
Unrealized Losses, 12 Months or More	(338,496)	(99,071)
Fair Value, Total	14,517,016	13,421,889
Unrealized Losses, Total	(812,311)	(240,797)
MBSs - commercial
Marketable Securities [Line Items]
Fair Value, Less Than 12 Months	15,494,054	7,898,509
Unrealized Losses, Less Than 12 Months	(995,504)	(197,720)
Fair Value, 12 Months or More	4,939,748	4,653,364
Unrealized Losses, 12 Months or More	(713,606)	(298,124)
Fair Value, Total	20,433,802	12,551,873
Unrealized Losses, Total	$ (1,709,110)	$ (495,844)