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STOCK-BASED COMPENSATION (Tables)
6 Months Ended
Jun. 30, 2019
STOCK-BASED COMPENSATION [Abstract]  
Summary of Activity of Non-vested Restricted Stock and RSU Awards
A summary of the activity for non-vested restricted stock and RSU awards as of June 30, 2019 and 2018 is presented below:

  
Shares
  
Grant Fair Value
 
Balance, December 31, 2018
  
657,717
  
$
7.39
 
Granted
  
28,191
   
5.64
 
Forfeited
  
(5,319
)
  
5.64
 
Vested
  
(1,408
)
  
7.72
 
Balance, June 30, 2019
  
679,181
  
$
7.39
 
         
Balance, December 31, 2017
  
36,803
  
$
7.93
 
Granted
  -
   -
 
Vested
  
(16,648
)  
8.22
 
Balance, June 30, 2018
  
20,155
  
$
7.93
 
Non-vested, Service-based Restricted Stock and RSU Awards
As of June 30, 2019, there was unrecognized compensation cost related to non-vested, service-based restricted stock and RSU awards of $3.2 million which will be recognized in each of the following years:

Unrecognized Expense
 
2019
 
$
404,977
 
2020
  
777,537
 
2021
  
758,325
 
2022
  
721,284
 
2023
  
509,910
 
  
$
3,172,033