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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Effective Income Tax Rate Reconciliation, Amount [Abstract]        
Income tax expense at federal tax rate     $ 5,229 $ 5,197
Increase (decrease) resulting from [Abstract]        
State income taxes net of federal benefit     477 489
Nontaxable buildup in cash surrender value     (444) (318)
Incentive stock option expense     (45) (200)
Tax exempt income     (3,606) (2,625)
Nondeductible expenses     124 82
Other, net     (212) (125)
Income tax expense $ 272 $ 1,068 $ 1,523 $ 2,500