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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2019
Share-based Payment Arrangement [Abstract]  
Unrecognized compensation expense is expected to be recognized
At June 30, 2019, the Company had unrecognized compensation expense of $4,981 related to granted but unvested stock awards, which is to be recognized as follows:
Remainder of 2019
 
$
1,304

2020
 
2,075

2021
 
1,040

2022
 
461

2023
 
101

 Total
 
$
4,981

Summary of restricted stock activity
The following table summarizes restricted stock activity under the Plans from December 31, 2018 through June 30, 2019:
 
Number of
Shares
 
Weighted
Average
Unvested, December 31, 2018
1,027

 
$
9.83

Granted
335

 
$
2.54

Vested
(256
)
 
$
7.30

Forfeited
(18
)
 
$
6.38

Unvested, June 30, 2019
1,088

 
$
9.31