INVESTMENTS - Amortized Cost and Approximate Fair Value of Available-for-Sale Securities (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	$ 109,717,364	$ 101,943,704
Gross Unrealized Gains	735,042	638,929
Gross Unrealized Losses	(1,691,023)	(2,421,193)
Available-for-sale securities, Fair Value	108,761,383	100,161,440
U.S. government and agencies
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	13,965,375	13,985,863
Gross Unrealized Gains	44	9,641
Gross Unrealized Losses	(517,447)	(661,964)
Available-for-sale securities, Fair Value	13,447,972	13,333,540
Mortgage-backed securities (government-sponsored enterprises - residential)
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	53,765,575	45,457,262
Gross Unrealized Gains	100,681	70,512
Gross Unrealized Losses	(793,137)	(1,114,597)
Available-for-sale securities, Fair Value	53,073,119	44,413,177
Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	41,986,414	42,500,579
Gross Unrealized Gains	634,317	558,776
Gross Unrealized Losses	(380,439)	(644,632)
Available-for-sale securities, Fair Value	$ 42,240,292	$ 42,414,723

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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