Schedule of Gross Carrying Value and Accumulated Amortization for Each Major Class of Intangible Asset (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 414,254	$ 444,184
Intangible assets - Gross Carrying Amount	476,354	506,284
Amortized intangible assets - Accumulated Amortization	(205,190)	(195,057)
Amortized intangible assets - Net	209,064us-gaap_FiniteLivedIntangibleAssetsNet	249,127us-gaap_FiniteLivedIntangibleAssetsNet
Intangible assets - Net	271,164	311,227
Patents
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	10,016	10,673
Amortized intangible assets - Accumulated Amortization	(5,313)	(5,179)
Amortized intangible assets - Net	4,703	5,494
Amortized intangible assets - Weighted Average Life	11 years
Trade Names
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	104,118	104,582
Amortized intangible assets - Accumulated Amortization	(32,881)	(28,310)
Amortized intangible assets - Net	71,237	76,272
Amortized intangible assets - Weighted Average Life	16 years
Customer Relationships
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	222,486	242,674
Amortized intangible assets - Accumulated Amortization	(126,193)	(121,092)
Amortized intangible assets - Net	96,293	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	840	3,769
Amortized intangible assets - Accumulated Amortization	(636)	(3,272)
Amortized intangible assets - Net	204	497
Amortized intangible assets - Weighted Average Life	3 years
Unpatented technology and other
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	69,760	75,528
Amortized intangible assets - Accumulated Amortization	(35,165)	(32,905)
Amortized intangible assets - Net	34,595	42,623
Amortized intangible assets - Weighted Average Life	11 years
Other Amortizable Intangible Assets
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	7,034	6,958
Amortized intangible assets - Accumulated Amortization	(5,002)	(4,299)
Amortized intangible assets - Net	2,032	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

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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