Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation and Other Compensation Matters (Details 2)

v3.6.0.2
Share-Based Compensation and Other Compensation Matters (Details 2) - Restricted shares [Member] - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Shares      
Unvested at the beginning of the period (in shares) 378,200 390,507 377,448
Stock awards granted (in shares or units) 231,937 201,024 216,607
Forfeited (in shares) (22,907) (10,550) (21,335)
Vested (in shares) (215,983) (202,781) (182,213)
Unvested at the end of the period (in shares) 371,247 378,200 390,507
Restricted shares expected to vest (in shares) 353,681    
Weighted Average Grant Date Fair Value      
Unvested at the beginning of the period (in dollars per share) $ 27.58 $ 26.19 $ 26.96
Grant date fair value (in dollars per share) 24.77 28.69 26.73
Forfeited (in dollars per share) 25.31 26.05 25.10
Vested (in dollars per share) 27.19 26.07 28.56
Unvested at the end of the period (in dollars per share) 26.20 $ 27.58 $ 26.19
Restricted shares expected to vest (in dollars per share) $ 26.20