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Investments In Securities (Schedule Of Gross Unrealized Gains And Losses And Amortized Cost For Securities) (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost $ 71,437,653 $ 75,573,673
General Obligations Of U.S. States, Territories And Political Subdivisions [Member]
   
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 37,864,558 38,658,463
Available-for-sale, at fair value, Gross Unrealized Gains 3,028,449 3,211,445
Available-for-sale, at fair value, Gross Unrealized Losses 11,011 0
Available-for-sale, at fair value, Estimated Fair Value 40,881,996 41,869,908
Special Revenue Obligations Of U.S. States, Territories And Political Subdivisions [Member]
   
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 17,612,648 18,933,299
Available-for-sale, at fair value, Gross Unrealized Gains 1,851,821 1,909,106
Available-for-sale, at fair value, Gross Unrealized Losses 6,726 10,455
Available-for-sale, at fair value, Estimated Fair Value 19,457,743 20,831,950
Corporate Debt Securities [Member]
   
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 15,042,627 17,064,697
Available-for-sale, at fair value, Gross Unrealized Gains 1,185,407 1,252,973
Available-for-sale, at fair value, Gross Unrealized Losses 0 14,750
Available-for-sale, at fair value, Estimated Fair Value 16,228,034 18,302,920
Auction Rate Securities [Member]
   
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 917,820 917,214
Available-for-sale, at fair value, Gross Unrealized Gains 12,980 14,986
Available-for-sale, at fair value, Gross Unrealized Losses 0 0
Available-for-sale, at fair value, Estimated Fair Value 930,800 932,200
Total Fixed Maturities [Member]
   
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 71,437,653 75,573,673
Available-for-sale, at fair value, Gross Unrealized Gains 6,078,657 6,388,510
Available-for-sale, at fair value, Gross Unrealized Losses 17,737 25,205
Available-for-sale, at fair value, Estimated Fair Value 77,498,573 81,936,978
Common Stocks And Nonredeemable Preferred Stocks [Member]
   
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 20,842,586 21,229,114
Available-for-sale, at fair value, Gross Unrealized Gains 10,047,906 7,373,056
Available-for-sale, at fair value, Gross Unrealized Losses 81,056 91,237
Available-for-sale, at fair value, Estimated Fair Value 30,809,436 28,510,933
Equity Securities [Member]
   
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 20,842,586 21,229,114
Available-for-sale, at fair value, Gross Unrealized Gains 10,047,906 7,373,056
Available-for-sale, at fair value, Gross Unrealized Losses 81,056 91,237
Available-for-sale, at fair value, Estimated Fair Value 30,809,436 28,510,933
Certificates Of Deposit And Other [Member]
   
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 19,839,497 13,567,648
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 19,839,497 13,567,648
Short-Term Investments [Member]
   
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Available-for-sale, at fair value, Amortized Cost 19,839,497 13,567,648
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 $ 19,839,497 $ 13,567,648