Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

Our earnings per share (basic and diluted) are presented below (in thousands, except per share amounts):

	Quarter ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
Net income	$	79,955	$	92,512	$	153,934	$	147,699
Weighted average number of common shares outstanding - basic	217,089		216,342		216,900		216,309
Effect of dilutive securities:
Restricted stock units	476		2		327		90
Performance share units	315		—		286		108
Stock options	25		171		42		246
Weighted average number of common shares outstanding - diluted	217,905		216,515		217,555		216,753
Net income per share - basic	$	0.37	$	0.43	$	0.71	$	0.68
Net income per share - diluted	$	0.37	$	0.43	$	0.71	$	0.68