XML 28 R32.htm IDEA: XBRL DOCUMENT v2.4.0.6
INCOME TAXES (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
INCOME TAXES [Abstract]      
United States federal corporate tax rate (in hundredths) 35.00% 35.00%  
Income tax expense (benefit) reconciliation [Abstract]      
Computed "expected" income tax expense $ 7,178,137 $ 9,764,400  
Increases (decreases) in tax resulting from:      
Tax-exempt interest income (942,975) (1,155,161)  
Dividends received deduction (194,572) (128,336)  
Proration of tax-exempt interest and dividends received deduction 170,632 192,525  
Other, net 25,225 1,124  
Total income tax expense 6,236,447 8,674,552  
Provision for uncertain tax positions $ 0   $ 0