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Business Acquisitions - Table (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]    
Finite-Lived Customer Lists, Gross $ 76,663 $ 76,581
Trademarks, Formulations And Product Technology   33,025
Other Finite-Lived Intangible Assets, Gross 6,123 6,114
Goodwill $ 86,708 $ 86,034