Goodwill and Intangible Assets (Schedule of Gross Carrying Value and Accumulated Amortization for Each Major Class of Intangible Asset) (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 523,780	$ 463,841
Intangible assets - Gross Carrying Amount	614,680	525,941
Amortized intangible assets - Accumulated Amortization	(260,345)	(238,104)
Amortized intangible assets - Net	263,435	225,737
Intangible assets - Net	354,335	287,837
Patents
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	10,298	10,202
Amortized intangible assets - Accumulated Amortization	(6,633)	(6,175)
Amortized intangible assets - Net	$ 3,665	4,027
Amortized intangible assets - Weighted Average Life	11 years
Trade names
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 114,307	110,658
Amortized intangible assets - Accumulated Amortization	(42,155)	(38,696)
Amortized intangible assets - Net	$ 72,152	71,962
Amortized intangible assets - Weighted Average Life	16 years
Customer relationships
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 301,507	257,071
Amortized intangible assets - Accumulated Amortization	(157,907)	(144,134)
Amortized intangible assets - Net	$ 143,600	112,937
Amortized intangible assets - Weighted Average Life	11 years
Non-compete agreements
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 0	794
Amortized intangible assets - Accumulated Amortization	0	(775)
Amortized intangible assets - Net	$ 0	19
Amortized intangible assets - Weighted Average Life	3 years
Unpatented technology
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 91,129	78,562
Amortized intangible assets - Accumulated Amortization	(47,751)	(42,745)
Amortized intangible assets - Net	$ 43,378	35,817
Amortized intangible assets - Weighted Average Life	10 years
Other
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 6,539	6,554
Amortized intangible assets - Accumulated Amortization	(5,899)	(5,579)
Amortized intangible assets - Net	$ 640	975
Amortized intangible assets - Weighted Average Life	10 years
Banjo trade name
Goodwill And Intangible Assets [Line Items]
Indefinite lived intangible assets - Gross Carrying Amount	$ 62,100	62,100
Indefinite lived intangible assets - Net	62,100	62,100
Akron Brass trade name
Goodwill And Intangible Assets [Line Items]
Indefinite lived intangible assets - Gross Carrying Amount	28,800	0
Indefinite lived intangible assets - Net	$ 28,800	$ 0