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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2018
Stock-Based Compensation  
Summary of the restricted stock awards activity

The following table summarizes the restricted stock activity during the six months ended June 30, 2018. 

 

 

 

 

    

Number of
Unvested

 

 

Restricted Stock

 

 

Shares

Outstanding January 1, 2018

 

1,914,570

Granted

 

1,919,252

Cancelled

 

 —

Vested

 

(1,170,827)

Forfeited

 

(282,364)

Outstanding June 30, 2018 (1)

 

2,380,631

(1)

The total outstanding non-vested shares of restricted stock awards granted to employees and directors are included in total outstanding shares as of June 30, 2018.