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Goodwill and Other Intangible Assets (Indefinite Lived Intangible Assets) (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Indefinite-lived intangible assets $ 37,505 $ 38,054
Trademarks and trade names    
Finite-Lived Intangible Assets [Line Items]    
Indefinite-lived intangible assets $ 37,505 $ 38,054