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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Statement of Comprehensive Income [Abstract]    
Net income $ 5,269 $ 14,803
Other comprehensive income (loss):    
Cash flow hedges 1,992 837
Less income tax expense (512) (326)
Foreign currency translation adjustment 2,592 780
Less income tax expense 0 (252)
Total other comprehensive income 4,072 1,039
Total comprehensive income $ 9,341 $ 15,842