Employer Sponsored Benefit Plans - Narrative (Details) - United States - Pension plan - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
IPM Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions during remainder of fiscal year	$ 1,200,000			$ 1,200,000
Contributions made by company to domestic pension plan	0		$ 300,000	$ 400,000	$ 900,000
Delayed contributions to plan	$ 300,000
ISS Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Pre-tax settlement loss		$ 400,000
Lydall Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Contributions made by company to domestic pension plan			$ 0		$ 0