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Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - Valuation Allowance of Deferred Tax Assets [Member] - USD ($)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Balance at Beginning Of Period $ 25,002,881 $ 27,295,741 $ 27,591,230
Additions Charged to Costs and Expenses 1,044,297 862,736 817,472
Additions Charged to Other Accounts 0 0 0
Deductions 0 (3,155,596) (1,112,961)
Balance at End Of Period $ 26,047,178 $ 25,002,881 $ 27,295,741