Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section 45

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Goodwill and Intangibles - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2014
Goodwill [Line Items]
Amortization expense	$ 16,437us-gaap_AmortizationOfIntangibleAssets	$ 15,431us-gaap_AmortizationOfIntangibleAssets	$ 15,456us-gaap_AmortizationOfIntangibleAssets
South America [Member]
Goodwill [Line Items]
Goodwill impairment charge				2,787
North America [Member]
Goodwill [Line Items]
Impairment of intangible assets					$ 1,700