Investments In Securities (Schedule Of Gross Realized Gains And Losses On Securities) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Total, Gross realized gains			$ 1,441,803	$ 1,018,217
Total, Gross realized losses			(720,637)	(178,047)
Net realized gain from securities			721,166	840,170
Impairments of other investments			(233,069)	(10,062)
Gain on other investments			113,239	26,234
Loss On Other Investments			0	(263,434)
Total			(119,830)	(247,262)
Net realized gain on investments	$ (338,631)	$ 8,689	601,336	592,908
General Obligations Of U.S. States, Territories And Political Subdivisions
Schedule of Available-for-sale Securities [Line Items]
Total, Gross realized losses			(12,319)	0
Issuer Obligations Of U S States Territories And Political Subdivisions Special Revenue [Member]
Schedule of Available-for-sale Securities [Line Items]
Total, Gross realized losses			(397)	0
Corporate Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Total, Gross realized gains			5,417	4,286
Common Stocks And Nonredeemable Preferred Stocks
Schedule of Available-for-sale Securities [Line Items]
Total, Gross realized gains			1,436,386	1,013,931
Total, Gross realized losses			(39,017)	(178,047)
Impairments of Debt And Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total, Gross realized losses			$ (668,904)	$ 0