Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Statement of Comprehensive Income [Abstract]        
Net income (loss) $ 29,866 $ (57,066) $ 20,175 $ (107,721)
Other comprehensive income (loss)        
Foreign currency translation adjustments (27,340) 37,583 (27,193) 50,762
Derivative adjustments        
Fair valuation of derivatives (83) (2,869) (42) (4,286)
Reclassification adjustment for loss on derivatives included in net income (loss)   1,579   1,094
Total other comprehensive income (loss) (27,423) 36,293 (27,235) 47,570
Total comprehensive income (loss) $ 2,443 $ (20,773) $ (7,060) $ (60,151)