Commitments and Contingencies - Legal Matters - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2021 USD ($) Case	Dec. 31, 2020 Case
Commitments And Contingencies Disclosure [Abstract]
Cumulative settlement payments for cases involving asbestos-related claims | $	$ 3,300,000
Cumulative settlement payments made for cases involving asbestos-related claims with all legal fees other than corporate counsel expenses | $	3,100,000
Average cost per settled claim excluding legal fees | $	$ 34,000
Number of claims pending	203	200
Number of new cases filed	25
Number of cases dismissed	17
Number of cases settled	5
Assessment regarding Loss contingency impact Description	We are not aware of any pending claims or assessments, other than as described above, which may have a material adverse impact on our liquidity, financial position, results of operations, or cash flows.