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INVESTMENT SECURITIES (Tables) | 6 Months Ended
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Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract] |
Summary of the amortized cost and fair values of securities available for sale |
|  | March 31, 2017 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
|  | (Dollars in thousands) |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. government-sponsored enterprises: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities-residential |  | $ | 8,115 |  |  | $ | 9 |  |  | $ | (161 | ) |  | $ | 7,963 |
Debt securities |  |  | 2,500 |  |  |  | — |  |  |  | (77 | ) |  |  | 2,423 |
Private label mortgage-backed securities-residential |  |  | 77 |  |  |  | — |  |  |  | (1 | ) |  |  | 76 |
Total securities available for sale |  | $ | 10,692 |  |  | $ | 9 |  |  | $ | (239 | ) |  | $ | 10,462 |
|  | September 30, 2016 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
|  | (Dollars in thousands) |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. government-sponsored enterprises: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities-residential |  | $ | 5,075 |  |  | $ | 52 |  |  | $ | — |  |  | $ | 5,127 |
Private label mortgage-backed securities-residential |  |  | 108 |  |  |  | — |  |  |  | (1 | ) |  |  | 107 |
Total securities available for sale |  | $ | 5,183 |  |  | $ | 52 |  |  | $ | (1 | ) |  | $ | 5,234 |
Summary of maturities of the debt securities and mortgage-backed securities available for sale |
|  | March 31, 2017 |
|  | Amortized |  |  | Fair |
|  | Cost |  |  | Value |
|  | (Dollars in thousands) |
Due within 1 year |  | $ | — |  |  | $ | — |
Due after 1 but within 5 years |  |  | — |  |  |  | — |
Due after 5 but within 10 years |  |  | 2,500 |  |  |  | 2,423 |
Due after 10 years |  |  | — |  |  |  | — |
Total debt securities |  |  | 2,500 |  |  |  | 2,423 |
Mortgage-backed securities: |  |  |  |  |  |  |  |
Residential |  |  | 8,192 |  |  |  | 8,039 |
Commercial |  |  | — |  |  |  | — |
Total |  | $ | 10,692 |  |  | $ | 10,462 |
Summary of the amortized cost and fair values of securities held to maturity |
|  | March 31, 2017 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
|  | (Dollars in thousands) |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. government agencies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities - residential |  | $ | 3,939 |  |  | $ | 116 |  |  | $ | (107 | ) |  | $ | 3,948 |
Mortgage-backed securities - commercial |  |  | 1,000 |  |  |  | 1 |  |  |  | — |  |  |  | 1,001 |
Obligations of U.S. government-sponsored enterprises: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed-securities - residential |  |  | 39,380 |  |  |  | 292 |  |  |  | (397 | ) |  |  | 39,275 |
Debt securities |  |  | 4,460 |  |  |  | — |  |  |  | (41 | ) |  |  | 4,419 |
Private label mortgage-backed securities - residential |  |  | 469 |  |  |  | — |  |  |  | (5 | ) |  |  | 464 |
Corporate securities |  |  | 3,000 |  |  |  | — |  |  |  | (172 | ) |  |  | 2,828 |
Total securities held to maturity |  | $ | 52,248 |  |  | $ | 409 |  |  | $ | (722 | ) |  | $ | 51,935 |
|  | September 30, 2016 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
|  | (Dollars in thousands) |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. government agencies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities - residential |  | $ | 4,383 |  |  | $ | 171 |  |  | $ | (90 | ) |  | $ | 4,464 |
Mortgage-backed securities - commercial |  |  | 1,034 |  |  |  | — |  |  |  | (1 | ) |  |  | 1,033 |
Obligations of U.S. government-sponsored enterprises: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage backed securities - residential |  |  | 40,024 |  |  |  | 1,098 |  |  |  | (16 | ) |  |  | 41,106 |
Debt securities |  |  | 4,000 |  |  |  | 1 |  |  |  | — |  |  |  | 4,001 |
Private label mortgage-backed securities - residential |  |  | 493 |  |  |  | — |  |  |  | (6 | ) |  |  | 487 |
Corporate securities |  |  | 3,000 |  |  |  | — |  |  |  | (242 | ) |  |  | 2,758 |
Total securities held to maturity |  | $ | 52,934 |  |  | $ | 1,270 |  |  | $ | (355 | ) |  | $ | 53,849 |
Summary of maturities of the debt securities and mortgage-backed securities securities held to maturity |
|  | March 31, 2017 |
|  | Amortized |  |  | Fair |
|  | Cost |  |  | Value |
|  | (Dollars in thousands) |
Due within 1 year |  | $ | — |  |  | $ | — |
Due after 1 but within 5 years |  |  | 2,000 |  |  |  | 1,997 |
Due after 5 but within 10 years |  |  | 4,499 |  |  |  | 4,325 |
Due after 10 years |  |  | 961 |  |  |  | 925 |
Total debt securities |  |  | 7,460 |  |  |  | 7,247 |
Mortgage-backed securities: |  |  |  |  |  |  |  |
Residential |  |  | 43,788 |  |  |  | 43,687 |
Commercial |  |  | 1,000 |  |  |  | 1,001 |
Total |  | $ | 52,248 |  |  | $ | 51,935 |

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