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Other, Net (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Other Income and Expenses [Abstract]        
Foreign currency transaction losses $ (4,806) $ (3,819) $ (1,084) $ (4,769)
Realized gain on sale of available-for-sale securities 24,465   24,465  
Other   (82)   (189)
Total $ 19,659 $ (3,901) $ 23,381 $ (4,958)