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Earnings Per Share Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table shows the computation of basic and diluted EPS for the three and six month periods ended June 30, 2014 and June 30, 2013, respectively:

 
 
Three Months Ended June 30,
 
Six Months Ended
June 30,
 
 
2014
 
2013
 
2014
 
2013
Numerator:
 
 
 
 
 
 
 
 
Net income attributable to common stockholders
 
$
9,590

 
$
4,509

 
$
20,979

 
$
8,860

 
 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
 
Weighted-average shares outstanding
 
20,735,135

 
16,115,099

 
19,105,666

 
16,072,047

Effect of dilutive securities
 
110,559

 
84,390

 
98,139

 
85,682

Weighted-average diluted shares
 
20,845,694

 
16,199,489

 
19,203,805

 
16,157,729

 
 
 
 
 
 
 
 
 
Basic earnings per share
 
$
0.46

 
$
0.28

 
$
1.10

 
$
0.55

Diluted earnings per share
 
$
0.46

 
$
0.28

 
$
1.09

 
$
0.55