Income Taxes (Tables)

6 Months Ended

Jun. 30, 2020

Income Tax Disclosure [Abstract]

Schedule of provision for income taxes [Table Text Block]

The provision for income taxes for the three and six months ended June 30, 2020, and 2019, consisted of the following:

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2020			2019			2020			2019
	(in thousands)
Current portion of income tax (expense) benefit:
Federal	$	—		$	—		$	—		$	—
State	(236)			176			(575)			(789)
Deferred portion of income tax (expense) benefit	36,921			(13,766)			136,268			33,237
Income tax (expense) benefit	$	36,685		$	(13,590)		$	135,693		$	32,448
Effective tax rate	29.1		%	21.2		%	21.3		%	20.3		%