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Income Taxes (Details 2) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Income Taxes    
Unrecognized tax benefits $ 0 $ 0
Federal
   
Income Taxes    
NOL carryforwards 234.5  
Capital loss carryforwards 3.3  
Additional NOLs 24.6  
Tax credits 9.3  
State
   
Income Taxes    
Additional NOLs 4.8  
Tax credits 4.6  
State | Maximum
   
Income Taxes    
NOL carryforwards $ 118.9