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Investments In Securities (Schedule Of Gross Unrealized Gains And Losses And Amortized Cost For Securities) (Details)
Mar. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost $ 96,557,152 $ 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 27,056,802 29,374,774
Available-for-sale, at fair value, Gross Unrealized Gains 439,524 440,628
Available-for-sale, at fair value, Gross Unrealized Losses 215,696 298,533
Available-for-sale, at fair value, Estimated Fair Value 27,280,630 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 57,270,359 57,459,818
Available-for-sale, at fair value, Gross Unrealized Gains 1,654,495 1,619,444
Available-for-sale, at fair value, Gross Unrealized Losses 571,374 502,135
Available-for-sale, at fair value, Estimated Fair Value $ 58,353,480 $ 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 $ 12,229,991 $ 13,327,765
Available-for-sale, at fair value, Gross Unrealized Gains 518,698 512,316
Available-for-sale, at fair value, Gross Unrealized Losses 0 0
Available-for-sale, at fair value, Estimated Fair Value 12,748,689 13,840,081
Total Fixed Maturities    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 96,557,152 100,162,357
Available-for-sale, at fair value, Gross Unrealized Gains 2,612,717 2,572,388
Available-for-sale, at fair value, Gross Unrealized Losses 787,070 800,668
Available-for-sale, at fair value, Estimated Fair Value 98,382,799 101,934,077
Common Stocks And Nonredeemable Preferred Stocks    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 25,203,870 24,836,032
Available-for-sale, at fair value, Gross Unrealized Gains 17,927,424 16,392,210
Available-for-sale, at fair value, Gross Unrealized Losses 62,861 48,983
Available-for-sale, at fair value, Estimated Fair Value 43,068,433 41,179,259
Equity Securities    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 25,203,870 24,836,032
Available-for-sale, at fair value, Gross Unrealized Gains 17,927,424 16,392,210
Available-for-sale, at fair value, Gross Unrealized Losses 62,861 48,983
Available-for-sale, at fair value, Estimated Fair Value 43,068,433 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 13,635,465 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 13,635,465 6,558,840
Short-Term Investments    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 13,635,465 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 $ 13,635,465 $ 6,558,840