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Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
Income Taxes - Additional Information (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Undistributed earnings relating to certain non-U.S. subsidiaries	$ 56,812,000	$ 44,643,000
Deferred tax liabilities, undistributed foreign earnings	0	0
Net operating loss carryforwards	26,122,000
Net operating loss carryforwards expiration dates	Various dates from 2013 to 2020
Unrecognized tax benefits classified as Long term income taxes payable	7,063,000	7,837,000	5,509,000
Reserves related to potential interest	$ 359,000	$ 496,000
Tax years that are open to examination	Tax years 2009 through 2012 remain open to examination by certain tax jurisdictions to which the Company is subject.

Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

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- Definition

This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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