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Stock Compensation Plans And Stock Based Compensation: Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) - $ / shares
 9 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Shares:    
Options outstanding, beginning of period (shares) 341,300 221,400
Exercised (shares) (16,220) (6,300)
Granted 0 76,000
Forfeited (shares) (2,900) (200)
Options outstanding, end of period (shares) 322,180 290,900
Weighted Average Exercise Price (in dollars per share):    
Options outstanding, beginning of period (dollars per share) $ 8.73 $ 7.49
Exercised (dollars per share) 7.88 4.84
Forfeited (dollars per share) 9.96 4.55
Options outstanding, end of period (dollars per share) $ 8.76 $ 8.35