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Income Taxes - Income (Loss) Before Income Tax Provision (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
United States $ (31,521) $ (27,068) $ (14,164)
International 8,369 9,373 15,531
Income (loss) from continuing operations before income taxes $ (23,152) $ (17,695) $ 1,367