Impairments of Goodwill and Other Long-Lived Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Impairment of goodwill	$ 63,000	$ 63,000
Carrying value of property, plant and equipment	221,642	221,642	$ 213,369
Impairment of other long-lived assets	1,206
Performance Materials
Segment Reporting Information [Line Items]
Impairment of goodwill	63,000	63,000
Impairment of other long-lived assets	1,206
Thermal Acoustical Solutions
Segment Reporting Information [Line Items]
Impairment of goodwill	0
Impairment of other long-lived assets	0
Property, Plant and Equipment | Performance Materials
Segment Reporting Information [Line Items]
Carrying value of property, plant and equipment	3,000	3,000
European Plant One | Property, Plant and Equipment | Thermal Acoustical Solutions
Segment Reporting Information [Line Items]
Carrying value of property, plant and equipment	28,500	28,500
European Plant Two | Property, Plant and Equipment | Thermal Acoustical Solutions
Segment Reporting Information [Line Items]
Carrying value of property, plant and equipment	$ 12,500	$ 12,500