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Fair Value of Financial Instruments (Valuation of Securities Using Fair Value Hierarchy) (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
United States
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	$ (12,991,379)	$ (17,096,060)
Short-Term Investments
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	55,983,557	30,998,094
Fair Value, Inputs, Level 1 | United States
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	(12,991,379)	(17,096,060)
Fair Value, Inputs, Level 1 | Short-Term Investments
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	55,983,557	30,998,094
Fair Value, Inputs, Level 2 | United States
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	0	0
Fair Value, Inputs, Level 2 | Short-Term Investments
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	0	0
Fair Value, Inputs, Level 3 | United States
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	0	0
Fair Value, Inputs, Level 3 | Short-Term Investments
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	$ 0	$ 0

X

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Glossary Trading Securities



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



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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 320



-SubTopic 10



-Section 35



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560



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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 320



-SubTopic 10



-Section 25



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558



Reference 4: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Glossary Available-for-Sale Securities



-URI http://asc.fasb.org/extlink&oid=6505594



Reference 5: http://www.xbrl.org/2003/role/presentationRef



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Section 03



-Paragraph 1



-Subparagraph a, f, g



-Article 7

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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