Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2017

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):

	Year Ended December 31,
	2017		2016		2015
Numerator:
Net income	$	95,128	$	67,847	$	48,098
Denominator:
Basic weighted average shares outstanding		29,392,559		29,394,559		31,350,542
Effect of dilutive securities:
SARS		99,321		125,119		197,299
Restricted stock		83,580		92,991		134,668
Diluted weighted average shares outstanding		29,575,460		29,612,669		31,682,509
Basic earnings per share	$	3.24	$	2.31	$	1.53
Diluted earnings per share	$	3.22	$	2.29	$	1.52

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:

	Year Ended December 31,
	2017		2016		2015
Restricted stock		83		12		501
Stock appreciation rights		10,617		4,631		5,828