Acquisitions - Coldenhove Acquisition Narrative (Details) - USD ($)		3 Months Ended								12 Months Ended
	Nov. 01, 2017	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Net sales										$ 1,034,900,000	$ 979,900,000	$ 941,500,000
W.A. Sanders Coldenhove Holding B.V.
Business Acquisition [Line Items]
Business acquisition, purchase price	$ 43,000,000
Goodwill expected to be deductible for income tax purpose	$ 0
Restructuring, integration, and other costs										500,000	1,300,000
Product
Business Acquisition [Line Items]
Net sales		$ 240,900,000	$ 256,200,000	$ 271,300,000	$ 266,500,000	$ 244,000,000	$ 245,100,000	$ 248,700,000	$ 242,100,000	$ 1,034,900,000	979,900,000	$ 941,500,000
Product | W.A. Sanders Coldenhove Holding B.V.
Business Acquisition [Line Items]
Net sales											$ 7,500,000