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Other Current Assets - Other Current Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Current Assets By Type [Line Items]
Deferred tax assets	$ 46,654	$ 41,774
Income tax recoverable	5,294	9,855
Other	20,956	13,805
Total other current assets	$ 72,904	$ 65,434

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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