Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per common share

The following table sets forth the computation of basic and diluted earnings per common share:

	Year Ended December 31,
	2019		2018		2017
	(in thousands, except per-share amounts)
Numerator:
Net income (1)	$	335,255	$	155,749	$	415,522
Denominator:
Weighted-average shares outstanding, basic	68,429		68,249		69,221
Effect of dilutive stock awards	130		182		156
Adjusted weighted-average shares outstanding, diluted	68,559		68,431		69,377
Earnings per Share:
Basic earnings per common share (1)	$	4.90	$	2.28	$	6.00
Diluted earnings per common share (1)	$	4.89	$	2.28	$	5.99
Anti-dilutive weighted-average shares	143		145		85