Fair Value Measurement Schedule Of Carrying Value And Fair Value Of Financial Assets Disclosed (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	$ 19,290,813	$ 15,826,515
Cost-basis investments	0	0
Accrued dividends and interest	1,286,710	1,063,837
Total	20,577,523	16,890,352
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	3,553,562	2,675,817
Accrued dividends and interest	0	0
Total	3,553,562	2,675,817
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	19,290,813	15,826,515
Cost-basis investments	3,284,868	2,516,608
Accrued dividends and interest	1,286,710	1,063,837
Total	23,862,391	19,406,960
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	19,290,813	15,826,515
Cost-basis investments	3,553,562	2,675,817
Accrued dividends and interest	1,286,710	1,063,837
Total	$ 24,131,085	$ 19,566,169