Discontinued Operations - Income (Loss) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) income from discontinued operations, net of income taxes	$ (400,000)	$ 18,200,000	$ 5,900,000	$ 26,700,000
Darex | Discontinued operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0	1,700,000	0	13,300,000
Cost of goods sold	0	1,200,000	0	13,900,000
Gross profit	0	500,000	0	(600,000)
Selling, general and administrative expenses	200,000	1,300,000	1,100,000	4,600,000
Restructuring expenses and asset impairments	100,000	0	300,000	800,000
Gain on sale of business	0	(25,000,000.0)	(9,600,000)	(43,500,000)
Other expense (income), net	100,000	(100,000)	100,000	(3,200,000)
Total expense (income)	400,000	(23,800,000)	(8,100,000)	(41,300,000)
(Loss) income from discontinued operations before income taxes	(400,000)	24,300,000	8,100,000	40,700,000
Provision for income taxes	0	(6,100,000)	(2,200,000)	(14,000,000.0)
(Loss) income from discontinued operations, net of income taxes	$ (400,000)	$ 18,200,000	$ 5,900,000	$ 26,700,000