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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
NET INCOME $ 4,664 $ 18,947 $ 57,837 $ 62,066
Other comprehensive income (loss):        
Foreign currency translation adjustment 200 57 74 829
Unrealized holding gain (loss) on investments 6 0 (103) 0
Unrealized gain (loss) on derivative instruments (31) 0 (31) 0
Total other comprehensive income (loss) 175 57 (60) 829
COMPREHENSIVE INCOME $ 4,839 $ 19,004 $ 57,777 $ 62,895