Litigation - Additional Information (Detail) $ in Thousands		12 Months Ended
	Feb. 24, 2011 Defendant Company	Dec. 31, 2016 USD ($)	Mar. 31, 2017 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of domestic insurance companies, lawsuit filed against | Company	13
Number of defendant insurers in the coverage action | Defendant	2
Number of domestic defendant insurers in action | Defendant	8
Number of domestic insurance companies, remain in litigation | Company	2
Reserves for total costs for asbestos liability claims pending or projected | $		$ 171,181	$ 166,293
Percentage attributable to settlement costs for unasserted claims projected to be filed		70.00%
Insurance recoveries receivable | $		$ 115,945	$ 112,319