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Interest Receivable (Tables) | 12 Months Ended
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Sep. 30, 2017
Receivables [Abstract] |
Schedule of interest receivable | The following table provides a summary of interest receivable by interest earning asset type.
| September 30, 2017 |  | September 30, 2016
| (In thousands)
Loans receivable | $ | 33,688 |  |  | $ | 29,858 |
Mortgage-backed securities | 6,049 |  |  | 5,670 |
Investment securities | 1,906 |  |  | 2,141 |
| $ | 41,643 |  |  | $ | 37,669 |

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