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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Statement of Comprehensive Income [Abstract]    
Net income $ 32,645 $ 13,174
Other comprehensive income (loss):    
Currency translation adjustment 23,005 (2,489)
Comprehensive income $ 55,650 $ 10,685