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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Income Tax [Line Items]    
Effective tax rate 33.00% 28.40%
Deferred income taxes $ (1,121) $ 6,802
New York [Member]
   
Income Tax [Line Items]    
Deferred income taxes 2,300  
Change in tax rate 0.00%  
Research Tax Credit Member]
   
Income Tax [Line Items]    
Deferred income taxes $ (800)