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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Statement of Comprehensive Income [Abstract]        
Net income $ 11,673 $ 13,339 $ 24,847 $ 30,127
Other comprehensive income (loss):        
Currency translation adjustment (14,214) (6,657) (16,703) (13,656)
Comprehensive income (loss) $ (2,541) $ 6,682 $ 8,144 $ 16,471