Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Schedule of calculations of basic and diluted net loss per common share

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

	For the Three Months Ended   March 31,
	2018		2017
	(in thousands, except per share data)
Net income	$	317,401	$	74,434
Basic weighted-average common shares outstanding	111,696		111,258
Dilutive effect of non-vested RSUs and contingent PSUs	1,183		71
Dilutive effect of Senior Convertible Notes	—		—
Diluted weighted-average common shares outstanding	112,879		111,329
Basic net income per common share	$	2.84	$	0.67
Diluted net income per common share	$	2.81	$	0.67