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Investments In Securities Investments in Securities (Schedule of Carrying Value and Fair Value of Financial Assets Disclosed) (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	$ 26,898,991	$ 21,790,068
Cost-basis investments	0	0
Accrued dividends and interest	1,389,526	1,004,126
Total	28,288,517	22,794,194
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	0	0
Cost-basis investments	0	0
Accrued dividends and interest	0	0
Total	0	0
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	0	0
Cost-basis investments	4,367,372	3,684,020
Accrued dividends and interest	0	0
Total	4,367,372	3,684,020
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	26,898,991	21,790,068
Cost-basis investments	4,119,328	3,588,314
Accrued dividends and interest	1,389,526	1,004,126
Total	32,407,845	26,382,508
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	26,898,991	21,790,068
Cost-basis investments	4,367,372	3,684,020
Accrued dividends and interest	1,389,526	1,004,126
Total	$ 32,655,889	$ 26,478,214

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+ References

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- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

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- Definition

Fair value portion of investments accounted under the cost method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=29638263&loc=d3e39828-111592

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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.

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