Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Components of Income (Loss) Before Income Taxes (Detail)

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Income Taxes - Summary of Components of Income (Loss) Before Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Schedule Of Income Before Income Tax Domestic And Foreign Line Items      
United States $ 52,422 $ (61,434) $ 1,865
Foreign 18,555 (3,978) 9,640
Income (loss) before income taxes $ 70,977 $ (65,412) $ 11,505