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Income Taxes (Details Textual) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Income Taxes (Textual) [Abstract]    
Decrease in valuation allowance $ 0.3 $ 0.9
Valuation allowance for operating loss and tax credit carryforwards 1.2 2.2
Net operating loss carryforwards 77  
Capital loss carryforward 0.3  
Period for suspension of net operating loss carryforwards   4 years
Extension of the term of net loss carryforwards   4 years
Income tax provision, current or deferred      
Operating loss carryforwards, expiration period start 2018  
Operating loss carryforwards, expiration period end 2032  
Capital loss carryforwards expiration period 2014