Reconciliation of Total Amounts of Unrecognized Tax Benefits Excluding Interest and Penalties (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of Unrecognized Tax Benefits [Line Items]
Beginning Balance	$ 18,660	$ 15,197	$ 23,857
Gross increases - tax positions in prior periods	14,462	3,153
Gross decreases - tax positions in prior periods	(3,321)		(1,392)
Gross increases - current period tax positions	3,672	3,729	3,551
Gross decreases - current period tax positions		(633)	(613)
Settlements		(2,467)	(10,383)
Foreign currency translation adjustments	(251)	(319)	177
Ending Balance	$ 33,222	$ 18,660	$ 15,197

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Unrecognized tax benefits, foreign currency translation adjustments.

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No definition available.

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- Definition

The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

+ 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

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- Definition

The gross amount of decreases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

+ References

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

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- Definition

The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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- Definition

The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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