Quarterly report pursuant to Section 13 or 15(d)

Share-Based Payments - Restricted Stock Activity (Details)

v3.10.0.1
Share-Based Payments - Restricted Stock Activity (Details) - Restricted Stock
3 Months Ended
Dec. 31, 2018
$ / shares
shares
Shares /Units  
Non-vested at beginning of period (in shares) | shares 554,233
Vested (in shares) | shares (174,539)
Expired or forfeited (in shares) | shares (18,843)
Non-vested at end of period (in shares) | shares 623,051
Weighted- average Grant-date Fair Value  
Non-vested weighted-average grant-date fair value, beginning of period (in dollars per share) $ 55.71
Granted, weighted-average grant-date fair value (in dollars per share) 42.21
Vested, weighted-average grant-date fair value (in dollars per share) 58.30
Expired or forfeited, weighted-average grant-date fair value (in dollars per share) 45.45
Non-vested weighted-average grant-date fair value, end of period (in dollars per share) $ 49.62