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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2019
Stock-Based Compensation  
Summary of the restricted stock awards activity

 

 

 

 

 

Number of Unvested Restricted Stock Shares

Outstanding, January 1, 2019

 

2,356,418

Granted

 

2,025,337

Vested

 

(697,782)

Forfeited

 

(82,952)

Outstanding, June 30, 2019 (1)

 

3,601,021

(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, 2019.