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Stock Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2017
Restricted Stock  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Nonvested Share Activity
A summary of the activity of the Company's non-vested restricted stock collectively under the 2010 and 2017 Plans for the years ended December 31, 2017, 2016 and 2015, respectively, is presented below:
 
2017
 
2016
 
2015
 
Number of
Non-vested
Restricted
Shares
 
Weighted
Average Per Share
Grant Date
Fair Value(1)
 
Number of
Non-vested
Restricted
Shares
 
Weighted
Average Per Share
Grant Date
Fair Value(1)
 
Number of
Non-vested
Restricted
Shares
 
Weighted
Average Per Share
Grant Date
Fair Value(1)
Non-vested shares at January 1
319,058

 
$
6.40

 
280,457

 
$
7.63

 
162,171

 
$
7.26

Granted
332,921

 
6.54

 
160,453

 
5.11

 
185,650

 
7.79

Vested
(229,051
)
 
6.67

 
(121,852
)
 
7.54

 
(67,364
)
 
7.18

Non-vested shares as of December 31
422,928

 
$
6.36

 
319,058

 
$
6.40

 
280,457

 
$
7.63

Weighted-average restricted stock granted during the period
332,921

 
$
6.54

 
160,453

 
$
5.11

 
185,650

 
$
7.79



(1) 
The grant date fair value of restricted stock awards is based on the closing market price of the Company’s common stock at the grant date.