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SECURITIES HELD TO MATURITY - Summary of amortized cost, fair value, and gross unrecognized gains and losses of securities held to maturity by contractual maturity (Detail) - USD ($)
Jun. 30, 2023
Dec. 31, 2022
Marketable Securities [Line Items]    
Amortized Cost $ 69,809,580 $ 77,427,309
Gross Unrealized Gains 1,198 57,703
Gross Unrealized Losses (8,053,682) (6,785,361)
Fair Value 61,757,096 70,699,651
U.S. Government and Agency Obligations    
Marketable Securities [Line Items]    
Securities held to maturity, due in One through five years, Amortized Cost 10,000,000 10,000,000
Securities held to maturity, due in Five through ten years, Amortized Cost 3,000,000 3,000,000
Securities held to maturity, due in One through five years, Gross Unrealized Losses (488,890) (456,850)
Securities held to maturity, due in Five through ten years, Gross Unrealized Losses (414,570) (466,866)
Securities held to maturity, due in One through five years, Fair Value 9,511,110 9,543,150
Securities held to maturity, due in Five through ten years, Fair Value 2,585,430 2,533,134
Corporate Bonds    
Marketable Securities [Line Items]    
Securities held to maturity, due in One through five years, Amortized Cost 2,450,732 2,444,729
Securities held to maturity, due in Five through ten years, Amortized Cost 17,283,079 15,825,262
Securities held to maturity, due in One through five years, Gross Unrealized Gains   1,269
Securities held to maturity, due in Five through ten years, Gross Unrealized Gains   54,738
Securities held to maturity, due in One through five years, Gross Unrealized Losses (59,312) (55,836)
Securities held to maturity, due in Five through ten years, Gross Unrealized Losses (2,107,369) (1,045,557)
Securities held to maturity, due in One through five years, Fair Value 2,391,420 2,390,162
Securities held to maturity, due in Five through ten years, Fair Value 15,175,710 14,834,443
Municipal Obligations    
Marketable Securities [Line Items]    
Securities held to maturity, due in Less than one year, Amortized Cost   7,706,402
Securities held to maturity, due in One through five years, Amortized Cost 902,072 902,545
Securities held to maturity, due in Five through ten years, Amortized Cost 375,000 375,000
Securities held to maturity, due in more than ten years, Amortized Cost 1,726,059 1,728,184
Securities held to maturity, due in Five through ten years, Gross Unrealized Gains 274 1,286
Securities held to maturity, due in Less than one year, Gross Unrealized Losses   (36,250)
Securities held to maturity, due in One through five years, Gross Unrealized Losses (74,765) (84,742)
Securities held to maturity, due in more than ten years, Gross Unrealized Losses (289,342) (346,586)
Securities held to maturity, due in Less than one year, Fair Value   7,670,152
Securities held to maturity, due in One through five years, Fair Value 827,307 817,803
Securities held to maturity, due in Five through ten years, Fair Value 375,274 376,286
Securities held to maturity, due in more than ten years, Fair Value 1,436,717 1,381,598
Residential Mortgage Backed Securities    
Marketable Securities [Line Items]    
Amortized Cost 13,414,683 14,425,827
Gross Unrealized Gains 924 410
Gross Unrealized Losses (1,590,709) (1,431,861)
Fair Value 11,824,898 12,994,376
Commercial Mortgage Backed Securities    
Marketable Securities [Line Items]    
Amortized Cost 20,657,955 21,019,360
Gross Unrealized Losses (3,028,725) (2,860,813)
Fair Value $ 17,629,230 $ 18,158,547