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Components of Comprehensive Income (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Comprehensive Income (Loss) [Line Items]        
Net Income (loss) $ (46,873) $ 214 $ (74,435) $ (15,786)
Other comprehensive income (loss):        
Foreign currency translation adjustment (17) 85 (584) 33
Comprehensive income (loss) $ (46,890) $ 299 $ (75,019) $ (15,753)