Investment Securities (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Amortized Cost	$ 122,327,185	$ 140,606,807
Gross Unrealized Gains	115,836	487,545
Gross Unrealized Losses	(3,839,820)	(1,844,102)
Estimated Fair Value	118,603,201	139,250,250
U.S. Treasury Notes [Member]
Amortized Cost	32,967,828	35,970,990
Gross Unrealized Gains
Gross Unrealized Losses	(1,128,095)	(411,145)
Estimated Fair Value	31,839,733	35,559,845
Government-Sponsored Enterprises [Member]
Amortized Cost	60,727,011	64,444,315
Gross Unrealized Gains
Gross Unrealized Losses	(2,156,361)	(887,811)
Estimated Fair Value	58,570,650	63,556,504
Municipal Securities [Member]
Amortized Cost	28,632,346	40,191,502
Gross Unrealized Gains	115,836	487,545
Gross Unrealized Losses	(555,364)	(545,146)
Estimated Fair Value	$ 28,192,818	$ 40,133,901

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

No definition available.

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

+ Details

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

No definition available.

+ Details

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

No definition available.

+ Details

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