Annual report pursuant to Section 13 and 15(d)

Stock-based Expense and Employee Benefits - Performance-Based Restricted Share Awards Activity (Detail)

v3.19.3
Stock-based Expense and Employee Benefits - Performance-Based Restricted Share Awards Activity (Detail) - Market Based Restricted Stock - $ / shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Number of Shares      
Beginning Balance (in shares) 690,165 1,564,160 1,015,095
Granted (in shares) 517,364 535,441 794,025
Vested (in shares) (677,857) (1,407,133) (51,250)
Forfeited/cancelled (in shares)   (2,303) (193,710)
Ending Balance (in shares) 529,672 690,165 1,564,160
Weighted-Average price      
Beginning of Period (in dollars per share) $ 22.76 $ 12.73 $ 11.85
Granted (in dollars per share) 35.66 28.18 13.58
Vested (in dollars per share) 23.02 13.69 12.52
Forfeited/cancelled (in dollars per share)   13.34 11.61
Ending of Period (in dollars per share) $ 35.03 $ 22.76 $ 12.73