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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME        
Net income $ 128,271 $ 29,176 $ 335,901 $ 40,430
Other comprehensive income:        
Foreign currency translation 187 (38) 29 97
Unrealized gain (loss) on marketable securities, net of tax 36 214 1,175 (189)
Defined benefit pension obligations, net of tax 128 111 347 333
Other comprehensive income 351 287 1,551 241
Comprehensive income $ 128,622 $ 29,463 $ 337,452 $ 40,671