Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2017

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 June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Numerator
Numerator for basic and diluted earnings per share - Net income attributable to common stockholders	$	45,310	$	70,749	$	75,872	$	129,754
Denominator
Denominator for basic earnings per share - weighted average shares outstanding	52,796		55,020		52,815		55,280
Effect of dilutive securities - stock options and other stock units	395		582		542		572
Denominator for diluted earnings per share - adjusted weighted average shares outstanding	53,191		55,602		53,357		55,852
Earnings per share:
Basic	$	0.86	$	1.29	$	1.44	$	2.35
Diluted	$	0.85	$	1.27	$	1.42	$	2.32