Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation - Summary of Restricted Stock Transactions (Details)

v3.10.0.1
Share-Based Compensation - Summary of Restricted Stock Transactions (Details) - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Shares      
Unvested at January 1, 2018 20,488    
Granted (in shares) 4,311    
Vested (in shares) (213)    
Forfeited (in shares) (202)    
Unvested at December 31, 2018 24,384 20,488  
Weighted-Average Grant Date Fair Value      
Unvested (in dollars per share) $ 7.59 $ 6.95  
Granted (in dollars per share) 11.02 $ 9.59 $ 3.52
Vested (in dollars per share) 11.60    
Forfeited (in dollars per share) $ 11.73