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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2017
Equity [Abstract]  
Diluted Earnings per Share
Diluted (loss) earnings per share for years ended December 31, 2017, 2016 and 2015 includes the effects of potential common shares when dilutive and is as follows:
 
2017
 
2016
 
2015
Net (loss) income attributable to common stockholders
$
(1,705
)
 
$
6,785

 
$
7,060

Weighted average number of common shares outstanding
29,942

 
29,530

 
29,209

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

 
348

 
190

 
 
 
 
 
 
Dilutive shares outstanding
29,942

 
29,878

 
29,399

Basic and dilutive (loss) earnings per share attributable to common stockholders
$
(0.06
)
 
$
0.23

 
$
0.24