Discontinued Operations - Summary Of Financial Information That Has Been Segregated From Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Discontinued Operations:
Net income (loss) from discontinued operations	$ (1,608)	$ (6,404)	$ 46,764	$ 3,192
Consumer and Industrial Chemistry Technologies | Discontinued Operations, Held-for-sale
Discontinued Operations:
Revenue	0	19,540	11,031	38,987
Operating expenses	0	(18,066)	(11,572)	(34,236)
Depreciation and amortization	0	(682)	0	(1,351)
Research and development	0	(153)	(69)	(322)
(Loss) income from operations	0	639	(610)	3,078
Other income	0	366	35	192
Gain (Loss) on sale of business	(2,100)	0	67,694	0
(Loss) income before income taxes	(2,100)	1,005	67,119	3,270
Income tax benefit (expense)	492	(7,409)	(20,355)	(78)
Net income (loss) from discontinued operations	(1,608)	$ (6,404)	46,764	$ 3,192
Assets:
Accounts receivable, net	0		0		$ 10,547
Inventories, net	0		0		52,069
Other current assets	0		0		446
Property and equipment, net	0		0		15,899
Goodwill	0		0		19,480
Other intangible assets, net	0		0		20,029
Assets held for sale	0		0		118,470
Valuation allowance	0		0		0
Assets held for sale, net	0		0		118,470
Liabilities:
Accounts payable	0		0		8,883
Accrued liabilities	0		0		291
Liabilities held for sale	$ 0		$ 0		$ 9,174