Income Taxes (Additional Information) (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Provision for income taxes	$ 29,435,000	$ 32,772,000	$ 82,003,000	$ 88,614,000
Effective tax rate	29.60%	29.20%	27.70%	29.20%
Minimum
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Reasonably possible change in unrecognized tax benefits over next 12 months	$ 0		$ 0
Maximum
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Reasonably possible change in unrecognized tax benefits over next 12 months	2,700,000		2,700,000
Hydra-Stop Product Line | Disposed of by Sale
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Foreign withholding taxes	$ 5,200,000		$ 5,200,000