Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation - Restricted Share Awards with Performance and Service Conditions (Details)

v3.19.3.a.u2
Stock Based Compensation - Restricted Share Awards with Performance and Service Conditions (Details) - Restricted Share Awards - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Restricted share awards, excluding those subject to market conditions      
Unvested, beginning (in shares) 311,010 236,694 107,699
Granted (in shares) 213,782 304,087 330,639
Vested during year (in shares) (236,013) (224,150) (194,569)
Forfeited (in shares) (19,396) (5,621) (7,075)
Unvested, ending (in shares) 269,383 311,010 236,694
Weighted Average Grant Date Fair Value      
Unvested, beginning (in dollars per share) $ 29.07 $ 27.96 $ 26.47
Granted (in dollars per share) 26.26 25.98 32.46
Vested during year (in dollars per share) 27.43 27.40 30.50
Forfeited (in dollars per share) 26.60 29.43 27.43
Unvested, ending (in dollars per share) $ 28.45 $ 29.07 $ 27.96