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Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]        
Net income $ 416,398 $ 273,104 $ 968,728 $ 680,902
Other comprehensive income, net of tax:        
Change in value of derivatives 25 25 75 75
Other comprehensive income 25 25 75 75
Comprehensive income (loss) $ 416,423 $ 273,129 $ 968,803 $ 680,977