Annual report pursuant to Section 13 and 15(d)

Equity - Summary of the Company's RSU Activity (Details)

v3.20.2
Equity - Summary of the Company's RSU Activity (Details) - Restricted stock units (RSU) - $ / shares
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Summary of RSU activity      
Non-vested shares outstanding at the beginning of the period (in shares) 646,129    
Granted (in shares) 382,795    
Vested (in shares) (371,971)    
Forfeited (in shares) (14,542)    
Non-vested shares outstanding at the end of the period (in shares) 642,411 646,129  
Weighted-Average Grant-Date Fair Value      
Non-vested shares outstanding at the beginning of the period (in dollars per share) $ 62.60    
Granted (in dollars per share) 74.26 $ 66.96 $ 64.33
Vested (in dollars per share) 63.91    
Forfeited (in dollars per share) 65.30    
Non-vested shares outstanding at the end of the period (in dollars per share) $ 68.73 $ 62.60