Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at January 1,	$ 13,199us-gaap_UnrecognizedTaxBenefits	$ 6,704us-gaap_UnrecognizedTaxBenefits
Increases due to acquisition opening balance sheet positions	0	6,420
Gross increases for tax positions of prior years	55	561
Gross increases for tax positions of current year	1,456	3,755
Decreases due to settlements and other prior year tax positions	(2,346)	(3,310)
Decreases for lapse of statute of limitations	(1,586)	(1,344)
Currency translation effect on foreign balances	(942)	413
Balance at December 31,	9,836us-gaap_UnrecognizedTaxBenefits	13,199us-gaap_UnrecognizedTaxBenefits
Reserves related to potential interest at December 31,	732	1,093
Unrecognized tax benefits at December 31,	$ 10,568	$ 14,292

The noncurrent portion of the amount recognized for uncertain tax positions as of the balance sheet date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

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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

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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 acquisitions.

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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 foreign currency translation.

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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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Amount of interest expense accrued for an underpayment of income taxes.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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