Goodwill and Intangible Assets (Schedule of Gross Carrying Value and Accumulated Amortization for Each Major Class of Intangible Asset) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 444,377	$ 444,184
Intangible assets - Gross Carrying Amount	506,477	506,284
Amortized intangible assets - Accumulated Amortization	(222,121)	(195,057)
Amortized intangible assets - Net	222,256	249,127
Intangible assets - Net	284,356	311,227
Patents
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	9,996	10,673
Amortized intangible assets - Accumulated Amortization	(5,108)	(5,179)
Amortized intangible assets - Net	4,888	5,494
Amortized intangible assets - Weighted Average Life	11 years
Trade names
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	106,545	104,582
Amortized intangible assets - Accumulated Amortization	(32,829)	(28,310)
Amortized intangible assets - Net	73,716	76,272
Amortized intangible assets - Weighted Average Life	16 years
Customer relationships
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	242,567	242,674
Amortized intangible assets - Accumulated Amortization	(138,562)	(121,092)
Amortized intangible assets - Net	104,005	121,582
Amortized intangible assets - Weighted Average Life	11 years
Non-compete agreements
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	3,026	3,769
Amortized intangible assets - Accumulated Amortization	(2,744)	(3,272)
Amortized intangible assets - Net	282	497
Amortized intangible assets - Weighted Average Life	3 years
Unpatented technology
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	75,209	75,528
Amortized intangible assets - Accumulated Amortization	(38,050)	(32,905)
Amortized intangible assets - Net	37,159	42,623
Amortized intangible assets - Weighted Average Life	11 years
Other
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	7,034	6,958
Amortized intangible assets - Accumulated Amortization	(4,828)	(4,299)
Amortized intangible assets - Net	2,206	2,659
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