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Investments In Securities (Schedule Of Gross Unrealized Gains And Losses And Amortized Cost For Securities) (Details)
Jun. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost $ 90,285,225 $ 100,162,357
General Obligations Of U.S. States, Territories And Political Subdivisions    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 24,068,439 29,374,774
Available-for-sale, at fair value, Gross Unrealized Gains 518,307 440,628
Available-for-sale, at fair value, Gross Unrealized Losses 69,044 298,533
Available-for-sale, at fair value, Estimated Fair Value 24,517,702 29,516,869
Special Revenue Obligations Of U.S. States, Territories And Political Subdivisions    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 54,984,551 57,459,818
Available-for-sale, at fair value, Gross Unrealized Gains 2,008,389 1,619,444
Available-for-sale, at fair value, Gross Unrealized Losses 246,869 502,135
Available-for-sale, at fair value, Estimated Fair Value $ 56,746,071 $ 58,577,127
Number of Special Revenue Bonds 60 0
Corporate Debt Securities    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost $ 11,232,235 $ 13,327,765
Available-for-sale, at fair value, Gross Unrealized Gains 553,514 512,316
Available-for-sale, at fair value, Gross Unrealized Losses 0 0
Available-for-sale, at fair value, Estimated Fair Value 11,785,749 13,840,081
Total Fixed Maturities    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 90,285,225 100,162,357
Available-for-sale, at fair value, Gross Unrealized Gains 3,080,210 2,572,388
Available-for-sale, at fair value, Gross Unrealized Losses 315,913 800,668
Available-for-sale, at fair value, Estimated Fair Value 93,049,522 101,934,077
Common Stocks And Nonredeemable Preferred Stocks    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 25,323,290 24,836,032
Available-for-sale, at fair value, Gross Unrealized Gains 18,269,854 16,392,210
Available-for-sale, at fair value, Gross Unrealized Losses 30,441 48,983
Available-for-sale, at fair value, Estimated Fair Value 43,562,703 41,179,259
Equity Securities    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 25,323,290 24,836,032
Available-for-sale, at fair value, Gross Unrealized Gains 18,269,854 16,392,210
Available-for-sale, at fair value, Gross Unrealized Losses 30,441 48,983
Available-for-sale, at fair value, Estimated Fair Value 43,562,703 41,179,259
Certificates Of Deposit And Other    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 17,845,956 6,558,840
Available-for-sale, at fair value, Gross Unrealized Gains 0 0
Available-for-sale, at fair value, Gross Unrealized Losses 0 0
Available-for-sale, at fair value, Estimated Fair Value 17,845,956 6,558,840
Short-Term Investments    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 17,845,956 6,558,840
Available-for-sale, at fair value, Gross Unrealized Gains 0 0
Available-for-sale, at fair value, Gross Unrealized Losses 0 0
Available-for-sale, at fair value, Estimated Fair Value $ 17,845,956 $ 6,558,840