Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Components of the provision for income taxes
Federal	$ 0	$ 0
State	(339)	(965)
Deferred portion of income tax benefit	99,347	47,003
Income tax benefit	$ 99,008	$ 46,038
Effective tax rate	19.40%	20.60%
Proceeds expected from income tax refunds	$ 7,600