Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Income Tax Disclosure [Abstract]          
Income tax benefit $ 4,492 $ 1,085 $ 5,938 $ 2,393  
Unrecognized tax benefits 893   893   1,036
Accrued interest and penalties relating to unrecognized tax benefits $ 1   $ 1   $ 18