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INCOME TAXES (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 1987
Federal [Abstract] |  |  |  |
Current | $ 4,217,000 | $ 3,787,000 | $ 2,847,000 |
Deferred | (3,896,000) | (1,765,000) | (536,000) |
Federal income tax expense | 321,000 | 2,022,000 | 2,311,000 |
State [Abstract] |  |  |  |
Current | 1,048,000 | 874,000 | 1,252,000 |
Deferred | (1,000) | 10,000 | 141,000 |
State tax expense | 1,047,000 | 884,000 | 1,393,000 |
Income tax expense | 1,368,000 | 2,906,000 | 3,704,000 |
Income tax expense (benefit) to statutory federal income tax rate reconciliation [Abstract] |  |  |  |
Income tax expense at federal tax rate | 6,798,000 | 6,517,000 | 5,993,000 |
Increase (decrease) resulting from [Abstract] |  |  |  |
State income taxes net of federal benefit | 692,000 | 575,000 | 1,092,000 |
Nontaxable buildup in cash surrender value | (711,000) | (399,000) | (349,000) |
Incentive stock option expense | (37,000) | (187,000) | (97,000) |
Tax exempt income | (5,230,000) | (3,594,000) | (2,815,000) |
Nondeductible expenses | 188,000 | 120,000 | 41,000 |
Other, net | (332,000) | (126,000) | (161,000) |
Income tax expense | 1,368,000 | 2,906,000 | 3,704,000 |
Deferred tax assets [Abstract] |  |  |  |
Bad debts | 2,286,000 | 1,955,000 |  | $ 6,700,000
Deferred compensation | 1,040,000 | 708,000 |  |
Stock based compensation | 235,000 | 271,000 |  |
Operational reserve | 453,000 | 464,000 |  |
AMT Credit | 4,490,000 | 2,239,000 |  |
Intangibles | 573,000 | 0 |  |
Net unrealized losses on securities available for sale | 0 | 2,969,000 |  |
Indirect tax benefits of unrecognized tax positions | 384,000 | 376,000 |  |
Other assets | 1,293,000 | 759,000 |  |
Gross deferred tax assets | 10,754,000 | 9,741,000 |  |
Deferred tax liabilities [Abstract] |  |  |  |
FHLB stock dividend | (414,000) | (410,000) |  |
Premises and equipment | (1,222,000) | (1,060,000) |  |
Patents | (967,000) | (937,000) |  |
Prepaid expenses | (633,000) | (743,000) |  |
Net unrealized gains on securities available for sale | (521,000) | 0 |  |
Deferred loan fees | 0 | 0 |  |
Gross deferred tax liabilities | (3,757,000) | (3,150,000) |  |
Net deferred tax assets (liabilities) | 6,997,000 | 6,591,000 |  |
Gross deferred tax on state net operating loss carryforwards | 829,000 | 780,000 |  |
Additional bad debt deductions provided by federal income tax laws | 2,286,000 | 1,955,000 |  | $ 6,700,000
Deferred tax liability, bad debt deductions | 2,300,000 | 2,300,000 |  |
Reconciliation for liabilities [Abstract] |  |  |  |
Balance at beginning of year | 983,000 | 931,000 |  |
Additions for tax positions related to the current year | 49,000 | 118,000 |  |
Additions for tax positions related to the prior years | 4,000 | 0 |  |
Reductions for tax positions due to settlement with taxing authorities | (62,000) | (16,000) |  |
Reductions for tax positions related to prior years | 0 | (50,000) |  |
Balance at end of year | 974,000 | $ 983,000 | $ 931,000 |
Unrecognized tax benefits that, if recognized, would impact the effective rate | 641,000 |  |  |
Accrued interest related to unrecognized tax benefits | $ 155,000 |  |  |

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