Fair Value Measurements (Additional Disclosures) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill		$ 0	$ 37,180,000	$ 0
Impairment related to property and equipment		0	0	0
Impairment of related to other intangible assets		0	0	$ 0
Cash equivalents		$ 0	$ 0
Energy Chemical Technologies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill	$ 37,200,000