Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

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

	Three Months Ended March 31,
	2018		2017
Numerator
Numerator for basic and diluted earnings per share - Net income attributable to common stockholders	$	8,285	$	30,561
Denominator
Denominator for basic earnings per share - weighted average shares outstanding	50,838		52,835
Effect of dilutive securities - stock options and other stock units	341		587
Denominator for diluted earnings per share - adjusted weighted average shares outstanding	51,179		53,422
Earnings per share:
Basic	$	0.16	$	0.58
Diluted	$	0.16	$	0.57