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IMPAIRMENT OF INVESTMENT SECURITIES (Tables) | 6 Months Ended
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Mar. 31, 2018
Schedule of Investments [Abstract] |
Schedule of gross unrealized losses and fair value for both available for sale and held to maturity securities by investment category and time frame for which the loss has been outstanding | The following tables present the gross unrealized losses and fair value at March 31, 2018 and September 30, 2017 for both available for sale and held to maturity securities by investment category and time frame for which the loss has been outstanding:
|  |  |  |  | March 31, 2018 |
|  |  |  |  | Less Than 12 Months |  |  | 12 Months Or Greater |  |  | Total |
|  | Number of |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Securities |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
|  |  |  |  | (Dollars in thousands) |
Obligations of U.S. government agencies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities - residential |  |  | 2 |  |  | $ | — |  |  | $ | — |  |  | $ | 513 |  |  | $ | (97 | ) |  | $ | 513 |  |  | $ | (97 | )
Mortgage-backed securities - commercial |  |  | 1 |  |  |  | — |  |  |  | — |  |  |  | 924 |  |  |  | (11 | ) |  |  | 924 |  |  |  | (11 | )
Obligations of U.S. government-sponsored enterprises |  |  |  |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Mortgage-backed securities - residential |  |  | 32 |  |  |  | 21,349 |  |  |  | (402 | ) |  |  | 22,461 |  |  |  | (743 | ) |  |  | 43,810 |  |  |  | (1,145 | )
Debt securities |  |  | 5 |  |  |  | — |  |  |  | — |  |  |  | 6,762 |  |  |  | (202 | ) |  |  | 6,762 |  |  |  | (202 | )
Private label mortgage-backed securities residential |  |  | 2 |  |  |  | — |  |  |  | — |  |  |  | 137 |  |  |  | (1 | ) |  |  | 137 |  |  |  | (1 | )
Corporate securities |  |  | 1 |  |  |  | — |  |  |  | — |  |  |  | 2,647 |  |  |  | (353 | ) |  |  | 2,647 |  |  |  | (353 | )
Total |  |  | 43 |  |  | $ | 21,349 |  |  | $ | (402 | ) |  | $ | 33,444 |  |  | $ | (1,407 | ) |  | $ | 54,793 |  |  | $ | (1,809 | )
|  |  |  |  | September 30, 2017 |
|  |  |  |  | Less Than 12 Months |  |  | 12 Months Or Greater |  |  | Total |
|  | Number of |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Securities |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
|  |  |  |  | (Dollars in thousands) |
Obligations of U.S. government agencies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities - residential |  |  | 2 |  |  | $ | — |  |  | $ | — |  |  | $ | 605 |  |  | $ | (96 | ) |  | $ | 605 |  |  | $ | (96 | )
Mortgage-backed securities - commercial |  |  | 1 |  |  |  | 958 |  |  |  | (10 | ) |  |  | — |  |  |  | — |  |  |  | 958 |  |  |  | (10 | )
Obligations of U.S. government-sponsored enterprises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities - residential |  |  | 20 |  |  |  | 6,582 |  |  |  | (92 | ) |  |  | 21,713 |  |  |  | (284 | ) |  |  | 28,295 |  |  |  | (376 | )
Debt securities |  |  | 5 |  |  |  | 4,890 |  |  |  | (71 | ) |  |  | 1,996 |  |  |  | (4 | ) |  |  | 6,886 |  |  |  | (75 | )
Private label mortgage-backed securities residential |  |  | 2 |  |  |  | — |  |  |  | — |  |  |  | 193 |  |  |  | (2 | ) |  |  | 193 |  |  |  | (2 | )
Corporate securities |  |  | 1 |  |  |  | — |  |  |  | — |  |  |  | 2,784 |  |  |  | (216 | ) |  |  | 2,784 |  |  |  | (216 | )
Total |  |  | 31 |  |  | $ | 12,430 |  |  | $ | (173 | ) |  | $ | 27,291 |  |  | $ | (602 | ) |  | $ | 39,721 |  |  | $ | (775 | )

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 + Details
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