Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-Lived Customer Lists, Gross	$ 68,456	$ 63,502
Finite-Lived Trademarks, Gross	23,834	18,944
Formulations And Product Technology	5,808	5,808
Other Finite-Lived Intangible Assets, Gross	6,850	6,647
Total	104,948	94,901
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	30,219	25,593
Customer Lists [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	15,501	12,681
Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	5,240	4,066
Formulations And Product Technology [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	4,035	3,896
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	$ 5,443	$ 4,950