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Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2016
Equity [Abstract]  
Diluted Earnings per Share
Diluted earnings per share for the three and six months ended June 30, 2016 and 2015 includes the effects of potential common shares consisting of common stock issuable upon the vesting of restrictive stock when dilutive. 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2016
 
2015
 
2016
 
2015
Net income attributable to common stockholders — basic
and diluted
$
2,720

 
$
3,205

 
$
5,283

 
$
6,797

Weighted average number of common shares outstanding
29,449

 
29,149

 
29,449

 
29,149

Dilutive effect of restricted stock grants after application
of the treasury stock method
307

 
187

 
183

 
122

Dilutive shares outstanding
29,756

 
29,336

 
29,632

 
29,271

Basic and diluted earnings per share attributable to
common stockholders
$
0.09

 
$
0.11

 
$
0.18

 
$
0.23