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Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Goodwill [Line Items]    
Indefinite-lived trademarks $ 23,252 $ 23,252
Total other intangible assets, gross 64,385 65,739
Accumulated amortization - definite-lived intangible assets (9,021) (7,996)
Other intangible assets, net $ 55,364 57,743 [1]
Definite-lived trademarks | Minimum    
Goodwill [Line Items]    
Estimated Useful Life (in years) 10 years  
Definite-lived trademarks | Maximum    
Goodwill [Line Items]    
Finite-lived intangible assets, gross $ 2,600 2,600
Estimated Useful Life (in years) 15 years  
Patents | Minimum    
Goodwill [Line Items]    
Estimated Useful Life (in years) 8 years  
Patents | Maximum    
Goodwill [Line Items]    
Finite-lived intangible assets, gross $ 13,833 15,187
Estimated Useful Life (in years) 24 years  
Customer relationships | Minimum    
Goodwill [Line Items]    
Estimated Useful Life (in years) 10 years  
Customer relationships | Maximum    
Goodwill [Line Items]    
Finite-lived intangible assets, gross $ 24,700 $ 24,700
Estimated Useful Life (in years) 15 years  
[1] See Note 2.