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Income Taxes (Details Textual) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Income Taxes (Textual) [Abstract]    
Statutory federal corporate tax rate 35.00%  
Valuation allowance $ 31.5 $ 27.2
Change in the valuation allowance 4.3  
Change in the valuation allowance included change in unrealized change in investments 0.4  
Change in the valuation allowance included change in deferred state income taxes $ 0.2