Investment Securities - Schedule of amortized cost and estimated fair values of debt securities (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Amortized Cost	$ 256,182,140	$ 248,988,818
Estimated Fair Value	209,554,380	261,601,925
Obligations of states and political subdivisions
Amortized Cost	256,051,824	248,858,502
Estimated Fair Value	209,210,455	261,183,377
Corporate securities
Amortized Cost	130,316	130,316
Estimated Fair Value	$ 343,925	$ 418,548

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
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-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
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-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563

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