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Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]        
Net income $ 348,620 $ 241,041 $ 552,331 $ 407,798
Other comprehensive income, net of tax:        
Change in value of derivatives 25 25 50 50
Other comprehensive income 25 25 50 50
Comprehensive income (loss) $ 348,645 $ 241,066 $ 552,381 $ 407,848