XML 66 R56.htm IDEA: XBRL DOCUMENT v3.19.1
Stock Compensation Plans: Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) - $ / shares
6 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Shares:    
Options outstanding, beginning of period (shares) 380,820 380,120
Exercised (shares) (30,416) (29,150)
Forfeited (shares) (3,900) (4,650)
Options outstanding, end of period (shares) 346,504 346,320
Weighted Average Exercise Price (in dollars per share):    
Options outstanding, beginning of period (dollars per share) $ 16.03 $ 13.23
Exercised (dollars per share) 9.31 8.05
Forfeited (dollars per share) 18.63 11.64
Options outstanding, end of period (dollars per share) $ 16.59 $ 13.69