Litigation - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended
	Feb. 24, 2011 Defendant Company	Dec. 31, 2013	Dec. 31, 2012
Commitments And Contingencies Disclosure [Abstract]
Number of domestic insurance companies, lawsuit filed against	13
Number of defendant insurers in the coverage action	2
Number of domestic defendant insurers in action	8
Number of domestic insurance companies, remain in litigation	2
Reserves for total costs for asbestos liability claims pending or projected			$ 181,022
Percentage attributable to settlement costs for unasserted claims projected to be filed			73.00%
Reserves for total costs for asbestos liability claims pending or projected		158,293
Insurance recoveries receivable			118,115
Changes in estimated coverage		$ 16,340