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Marketable Securities (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Fair value of marketable securities, by type
Fair value of marketable securities	$ 18,958,810	$ 16,686,136
U.S. Treasury notes and bonds
Fair value of marketable securities, by type
Fair value of marketable securities	2,468,712	2,473,596
U.S. Agency issued mortgage-backed securities – variable rate
Fair value of marketable securities, by type
Fair value of marketable securities	3,577,120	3,708,920
U.S. Agency notes and bonds – fixed rate
Fair value of marketable securities, by type
Fair value of marketable securities	1,002,202	1,505,177
SBA loan pools – variable rate
Fair value of marketable securities, by type
Fair value of marketable securities	1,930,776	1,988,443
Municipal bonds – VRDN
Fair value of marketable securities, by type
Fair value of marketable securities	9,980,000	7,010,000
Level 1
Fair value of marketable securities, by type
Fair value of marketable securities	12,448,712	9,483,596
Level 1 | U.S. Treasury notes and bonds
Fair value of marketable securities, by type
Fair value of marketable securities	2,468,712	2,473,596
Level 1 | U.S. Agency issued mortgage-backed securities – variable rate
Fair value of marketable securities, by type
Fair value of marketable securities	0	0
Level 1 | U.S. Agency notes and bonds – fixed rate
Fair value of marketable securities, by type
Fair value of marketable securities	0	0
Level 1 | SBA loan pools – variable rate
Fair value of marketable securities, by type
Fair value of marketable securities	0	0
Level 1 | Municipal bonds – VRDN
Fair value of marketable securities, by type
Fair value of marketable securities	9,980,000	7,010,000
Level 2
Fair value of marketable securities, by type
Fair value of marketable securities	6,510,098	7,202,540
Level 2 | U.S. Treasury notes and bonds
Fair value of marketable securities, by type
Fair value of marketable securities	0	0
Level 2 | U.S. Agency issued mortgage-backed securities – variable rate
Fair value of marketable securities, by type
Fair value of marketable securities	3,577,120	3,708,920
Level 2 | U.S. Agency notes and bonds – fixed rate
Fair value of marketable securities, by type
Fair value of marketable securities	1,002,202	1,505,177
Level 2 | SBA loan pools – variable rate
Fair value of marketable securities, by type
Fair value of marketable securities	1,930,776	1,988,443
Level 2 | Municipal bonds – VRDN
Fair value of marketable securities, by type
Fair value of marketable securities	$ 0	$ 0

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Trading Securities which consist of all investments in certain debt and equity securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for which an entity has elected the fair value option. Trading generally reflects active and frequent buying and selling, and trading securities are generally used with the objective of generating profits on short-term differences in price, but this category of investments may also include items which are not intended to be sold in the near term or for which the fair value option has been elected.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Trading Securities

-URI http://asc.fasb.org/extlink&oid=6526789

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