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Goodwill and Other Intangible Assets (Finite-lived Intangible Assets Amortization Expense) (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]      
Remainder of 2015 $ 2,806    
2016 8,622    
2017 6,756    
2018 6,166    
2019 5,618    
Thereafter 18,346    
Total $ 48,314 $ 56,733 $ 12,378