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INCOME TAXES (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Income Tax Disclosure [Abstract]          
United States federal corporate tax rate (in hundredths) 35.00% 35.00% 35.00% 35.00%  
Income tax expense (benefit) reconciliation [Abstract]          
Computed expected income tax expense (benefit) $ 2,782,030 $ (1,929,132) $ 9,960,167 $ 7,835,268  
Increases (decreases) in tax resulting from:          
Tax-exempt interest income (993,175) (1,126,316) (1,936,150) (2,281,477)  
Dividends received deduction (222,468) (158,109) (417,040) (286,445)  
Proration of tax-exempt interest and dividends received deduction 182,347 192,663 352,979 385,188  
Other, net (12,315) 85,561 12,910 86,685  
Total income tax expense (benefit) 1,736,419 (2,935,333) 7,972,866 5,739,219  
Provision for uncertain tax positions $ 0   $ 0   $ 0