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Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Comprehensive Income (Loss) [Line Items]        
Currency translation adjustments $ 33,506 $ (37,383) $ 37,378 $ (64,762)