Fair Value Measurement Schedule Of Carrying Value And Fair Value Of Financial Assets Disclosed (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	$ 20,592,694	$ 23,626,761
Cost-basis investments	0	0
Accrued dividends and interest	1,124,075	1,006,698
Total Financial Assets	21,716,769	24,633,459
Contingent consideration	0	0
Total Financial Liabilities	0	0
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 Financial Assets	0	0
Contingent consideration	0	0
Total Financial Liabilities	0	0
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	0	0
Cost-basis investments	2,478,305	2,069,302
Accrued dividends and interest	0	0
Total Financial Assets	2,478,305	2,069,302
Contingent consideration	341,250	341,250
Total Financial Liabilities	341,250	341,250
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	20,592,694	23,626,761
Cost-basis investments	2,268,417	1,927,429
Accrued dividends and interest	1,124,075	1,006,698
Total Financial Assets	23,985,186	26,560,888
Contingent consideration	341,250	341,250
Total Financial Liabilities	341,250	341,250
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	20,592,694	23,626,761
Cost-basis investments	2,478,305	2,069,302
Accrued dividends and interest	1,124,075	1,006,698
Total Financial Assets	24,195,074	26,702,761
Contingent consideration	341,250	341,250
Total Financial Liabilities	$ 341,250	$ 341,250