Reconciliation of Total Amounts of Unrecognized Tax Benefits Excluding Interest and Penalties (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits [Line Items]
Beginning Balance	$ 18,780us-gaap_UnrecognizedTaxBenefits	$ 33,222us-gaap_UnrecognizedTaxBenefits	$ 18,660us-gaap_UnrecognizedTaxBenefits
Gross increases - tax positions in prior periods	10	413	14,462
Gross decreases - tax positions in prior periods	(2,379)		(3,321)
Gross increases - current period tax positions	1,324	1,476	3,672
Gross decreases - current period tax positions	0	0	0
Settlements	(963)	(15,444)
Foreign currency translation adjustments	(257)	(887)	(251)
Ending Balance	$ 16,515us-gaap_UnrecognizedTaxBenefits	$ 18,780us-gaap_UnrecognizedTaxBenefits	$ 33,222us-gaap_UnrecognizedTaxBenefits

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Unrecognized tax benefits, foreign currency translation adjustments.

+ References

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

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- Definition

Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

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-Subparagraph (a)(2)

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- Definition

Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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