Commitments and Contingencies - Legal Matters - Additional Information (Detail)	3 Months Ended	6 Months Ended	174 Months Ended
	Sep. 30, 2014 USD ($)	Jun. 30, 2016 USD ($) Case	Jun. 30, 2016 USD ($) Case	Dec. 31, 2015 Case
Commitments And Contingencies Disclosure [Abstract]
Cumulative settlement payments for cases involving asbestos-related claims | $	$ 500,000		$ 900,000
Average cost per settled claim excluding legal fees | $		$ 25,000	$ 25,000
Number of claims pending		217	217	221
Number of new cases filed		40
Number of cases dismissed		42
Number of cases settled		2
Settlement recovering expense | $	$ 200,000
Assessment regarding Loss contingency impact Description		We are not aware of 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.