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INCOME TAXES (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
Federal: |  |  |
Current | $ 4,410 | $ 4,217 | $ 3,787
Deferred | (440) | (3,896) | (1,765)
Federal income tax expense | 3,970 | 321 | 2,022
State: |  |  |
Current | 1,422 | 1,048 | 874
Deferred | 210 | (1) | 10
State tax expense | 1,632 | 1,047 | 884
Income tax expense | 5,602 | 1,368 | 2,906
Income tax expense (benefit) to statutory federal income tax rate reconciliation [Abstract] |  |  |
Income tax expense at federal tax rate | 13,588 | 6,798 | 6,517
Increase (decrease) resulting from: |  |  |
State income taxes net of federal benefit | 933 | 692 | 575
Nontaxable buildup in cash surrender value | (580) | (711) | (399)
Incentive stock option expense | (66) | (37) | (187)
Tax exempt income | (8,257) | (5,230) | (3,594)
Nondeductible expenses | 196 | 188 | 120
Other, net | (212) | (332) | (126)
Income tax expense | 5,602 | 1,368 | 2,906
Deferred tax assets: |  |  |
Bad debts | 2,044 | 2,286 |
Deferred compensation | 1,345 | 1,040 |
Stock based compensation | 165 | 235 |
Operational reserve | 540 | 453 |
AMT Credit | 5,563 | 4,490 |
Intangibles | 393 | 573 |
Indirect tax benefits of unrecognized tax positions | 216 | 384 |
Other assets | 1,462 | 1,293 |
Gross deferred tax assets | 11,728 | 10,754 |
Deferred tax liabilities: |  |  |
FHLB stock dividend | (411) | (414) |
Premises and equipment | (1,913) | (1,222) |
Patents | (988) | (967) |
Prepaid expenses | (668) | (633) |
Net unrealized gains on securities available for sale | (12,348) | (521) |
Gross deferred tax liabilities | (16,328) | (3,757) |
Net deferred tax liabilities | (4,600) |  |
Net deferred tax assets |  | 6,997 |
Gross deferred tax on state net operating loss carryforwards | 921 | 829 |
Additional bad debt deductions provided by federal income tax laws | 6,700 |  |
Deferred tax liability, bad debt deductions | 2,300 | 2,300 |
Reconciliation for liabilities [Abstract] |  |  |
Balance at beginning of year | 974 | 983 |
Additions for tax positions related to the current year | 63 | 49 |
Additions for tax positions related to the prior years | 0 | 4 |
Reductions for tax positions due to settlement with taxing authorities | (372) | (62) |
Reductions for tax positions related to prior years | (140) | 0 |
Balance at end of year | 525 | $ 974 | $ 983
Unrecognized tax benefits that, if recognized, would impact the effective rate | 347 |  |
Accrued interest related to unrecognized tax benefits | 110 |  |
Deferred Tax Expense, Event of Liquidation | $ 2,300 |  |

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