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INVESTMENT SECURITIES (Tables) | 9 Months Ended
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Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract] |
Summary of the amortized cost and fair values of securities available for sale |
|  | June 30, 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 |  | $ | 7,863 |  |  | $ | 6 |  |  | $ | (130 | ) |  | $ | 7,739 |
Debt securities |  |  | 2,500 |  |  |  | — |  |  |  | (61 | ) |  |  | 2,439 |
Private label mortgage-backed securities-residential |  |  | 66 |  |  |  | — |  |  |  | (1 | ) |  |  | 65 |
Total securities available for sale |  | $ | 10,429 |  |  | $ | 6 |  |  | $ | (192 | ) |  | $ | 10,243 |
|  | 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 |
|  | June 30, 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 |  |  |  | 2,439 |
Due after 10 years |  |  | — |  |  |  | — |
Total debt securities |  |  | 2,500 |  |  |  | 2,439 |
Mortgage-backed securities: |  |  |  |  |  |  |  |
Residential |  |  | 7,929 |  |  |  | 7,804 |
Commercial |  |  | — |  |  |  | — |
Total |  | $ | 10,429 |  |  | $ | 10,243 |
Summary of the amortized cost and fair values of securities held to maturity |
|  | June 30, 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 |  | $ | 3,738 |  |  | $ | 118 |  |  | $ | (95 | ) |  | $ | 3,761 |
Mortgage-backed securities - commercial |  |  | 984 |  |  |  | — |  |  |  | (11 | ) |  |  | 973 |
Obligations of U.S. government-sponsored enterprises: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed-securities - residential |  |  | 38,427 |  |  |  | 356 |  |  |  | (263 | ) |  |  | 38,520 |
Debt securities |  |  | 4,461 |  |  |  | — |  |  |  | (41 | ) |  |  | 4,420 |
Private label mortgage-backed securities - residential |  |  | 463 |  |  |  | — |  |  |  | (3 | ) |  |  | 460 |
Corporate securities |  |  | 3,000 |  |  |  | — |  |  |  | (211 | ) |  |  | 2,789 |
Total securities held to maturity |  | $ | 51,073 |  |  | $ | 474 |  |  | $ | (624 | ) |  | $ | 50,923 |
|  | 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 |
|  | June 30, 2017 |
|  | Amortized |  |  | Fair |
|  | Cost |  |  | Value |
|  | (Dollars in thousands) |
Due within 1 year |  | $ | 2,000 |  |  | $ | 1,995 |
Due after 1 but within 5 years |  |  | — |  |  |  | — |
Due after 5 but within 10 years |  |  | 4,499 |  |  |  | 4,281 |
Due after 10 years |  |  | 962 |  |  |  | 933 |
Total debt securities |  |  | 7,461 |  |  |  | 7,209 |
Mortgage-backed securities: |  |  |  |  |  |  |  |
Residential |  |  | 42,628 |  |  |  | 42,741 |
Commercial |  |  | 984 |  |  |  | 973 |
Total |  | $ | 51,073 |  |  | $ | 50,923 |

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