Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share (in thousands, except share and per share data):  

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Numerator:
Net income available to common shareholders	$	35,710	$	42,819	$	67,265	$	79,930
Denominator:
Basic weighted average shares outstanding		58,486,192		58,760,753		58,514,676		58,807,694
Effect of dilutive securities:
Stock appreciation rights and options		129,839		173,571		141,958		183,814
Restricted stock		71,509		117,089		101,567		133,750
Diluted weighted average shares outstanding		58,687,540		59,051,413		58,758,201		59,125,258
Basic earnings per share	$	0.61	$	0.73	$	1.15	$	1.36
Diluted earnings per share	$	0.61	$	0.73	$	1.14	$	1.35

Antidilutive Securities Excluded from Computation of Earnings Per Share

The computation of diluted earnings per share excludes the following potentially dilutive securities because the effect would be anti-dilutive:

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Stock appreciation rights		24,536		21,260		18,675		16,063
Performance-based restricted stock units		—		854		—		427