Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Schedule of anti-dilutive securities excluded from computation of earnings per share [Table Text Block]

The following table details the weighted-average anti-dilutive securities for the periods presented:

	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2020	2019	2020	2019
	(in thousands)
Anti-dilutive	701	—	877	715

Schedule of calculations of basic and diluted net income (loss) per common share [Table Text Block]

The following table sets forth the calculations of basic and diluted net income (loss) per common share:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2020		2019		2020		2019
	(in thousands, except per share data)
Net income (loss)	$	(89,252)	$	50,388	$	(501,147)	$	(127,180)
Basic weighted-average common shares outstanding	113,008		112,262		113,015		112,257
Dilutive effect of non-vested RSUs and contingent PSUs	—		670		—		—
Diluted weighted-average common shares outstanding	113,008		112,932		113,015		112,257
Basic net income (loss) per common share	$	(0.79)	$	0.45	$	(4.43)	$	(1.13)
Diluted net income (loss) per common share	$	(0.79)	$	0.45	$	(4.43)	$	(1.13)