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Marketable Securities (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	$ 8,055,017	$ 15,622,111
U.S. Agency issued mortgage-backed securities – variable rate
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	5,456,811	6,814,957
U.S. Agency notes and bonds – fixed rate
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	1,199,538	1,795,330
SBA loan pools – variable rate
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	1,398,668	1,346,824
Municipal bonds – VRDN
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	0	5,665,000
Level 1
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	0	5,665,000
Level 1 | U.S. Agency issued mortgage-backed securities – variable rate
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	0	0
Level 1 | U.S. Agency notes and bonds – fixed rate
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	0	0
Level 1 | SBA loan pools – variable rate
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	0	0
Level 1 | Municipal bonds – VRDN
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	0	5,665,000
Level 2
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	8,055,017	9,957,111
Level 2 | U.S. Agency issued mortgage-backed securities – variable rate
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	5,456,811	6,814,957
Level 2 | U.S. Agency notes and bonds – fixed rate
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	1,199,538	1,795,330
Level 2 | SBA loan pools – variable rate
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	1,398,668	1,346,824
Level 2 | Municipal bonds – VRDN
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	$ 0	$ 0

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+ References

No definition available.

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Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26626-111562

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.4)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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=82896770&loc=d3e26610-111562

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