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Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
Income Taxes - Additional Information (Detail) (USD $)	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Income Tax Contingency [Line Items]
Income tax expense	$ 3,066,000	$ 4,685,000
Effective tax rate	4.00%
Uncertain income tax position balance	$ 17,800,000		$ 18,900,000
Russia
Income Tax Contingency [Line Items]
Underlying tax rate	20.00%
Poland
Income Tax Contingency [Line Items]
Underlying tax rate	19.00%
Ukraine
Income Tax Contingency [Line Items]
Underlying tax rate	19.00%
Hungary
Income Tax Contingency [Line Items]
Underlying tax rate	19.00%
United States
Income Tax Contingency [Line Items]
Underlying tax rate	35.00%

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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