INVESTMENT SECURITIES (Tables)
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6 Months Ended |
Mar. 31, 2018 |
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| Investments, Debt and Equity Securities [Abstract] |
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| Summary of amortized cost, estimated fair value and related unrealized gains and losses on securities available for sale |
The amortized cost, estimated fair value and related unrealized gains and losses on securities available for sale and held to maturity as of March 31, 2018 and September 30, 2017, respectively, were as follows: | | | | | | | | | | | | | | | | | Available for sale securities | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Fair Value | March 31, 2018 | | | | | | | | U.S. government agency obligations | $ | 37,928 |
| | $ | 8 |
| | $ | 1,020 |
| | $ | 36,916 |
| Obligations of states and political subdivisions | 35,563 |
| | 15 |
| | 609 |
| | 34,969 |
| Mortgage-backed securities | 42,095 |
| | 30 |
| | 1,056 |
| | 41,069 |
| Agency securities | 125 |
| | 110 |
| | 2 |
| | 233 |
| Corporate debt securities | 5,377 |
| | — |
| | 250 |
| | 5,127 |
| Total available for sale securities | $ | 121,088 |
| | $ | 163 |
| | $ | 2,937 |
| | $ | 118,314 |
| | | | | | | | | September 30, 2017 | | | | | | | | U.S. government agency obligations | $ | 18,454 |
| | $ | 35 |
| | $ | 448 |
| | $ | 18,041 |
| Obligations of states and political subdivisions | 35,656 |
| | 271 |
| | 132 |
| | 35,795 |
| Mortgage-backed securities | 36,661 |
| | 124 |
| | 311 |
| | 36,474 |
| Agency Securities | 147 |
| | 83 |
| | — |
| | 230 |
| Corporate debt securities | 5,410 |
| | — |
| | 67 |
| | 5,343 |
| Total available for sale securities | $ | 96,328 |
| | $ | 513 |
| | $ | 958 |
| | $ | 95,883 |
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| Held-to-maturity securities |
| | | | | | | | | | | | | | | | | Held to maturity securities | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Fair Value | March 31, 2018 | | | | | | | | Obligations of states and political subdivisions | $ | 1,309 |
| | $ | — |
| | $ | 3 |
| | $ | 1,306 |
| Mortgage-backed securities | 3,704 |
| | 47 |
| | 16 |
| | 3,735 |
| Total held to maturity securities | $ | 5,013 |
| | $ | 47 |
| | $ | 19 |
| | $ | 5,041 |
| | | | | | | | | September 30, 2017 | | | | | | | | Obligations of states and political subdivisions | $ | 1,311 |
| | $ | 17 |
| | $ | — |
| | $ | 1,328 |
| Mortgage-backed securities | 4,142 |
| | 136 |
| | 1 |
| | 4,277 |
| Total held to maturity securities | $ | 5,453 |
| | $ | 153 |
| | $ | 1 |
| | $ | 5,605 |
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| | | | | | | | | | | | | | | | | | March 31, 2018 | | September 30, 2017 | Held to maturity securities | Amortized Cost | | Estimated Fair Value | | Amortized Cost | | Estimated Fair Value | Due after one year through five years | $ | 1,309 |
| | $ | 1,306 |
| | $ | 1,311 |
| | $ | 1,328 |
| Mortgage backed securities | 3,704 |
| | 3,735 |
| | 4,142 |
| | 4,277 |
| Total held to maturity securities | $ | 5,013 |
| | $ | 5,041 |
| | $ | 5,453 |
| | $ | 5,605 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | Less than 12 Months | | 12 Months or More | | Total | Held to maturity securities | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | March 31, 2018 | | | | | | | | | | | | | Obligations of states and political subdivisions | | $ | 1,131 |
| | $ | 3 |
| | $ | — |
| | $ | — |
| | $ | 1,131 |
| | $ | 3 |
| Mortgage-backed securities | | 1,571 |
| | 16 |
| | — |
| | — |
| | 1,571 |
| | 16 |
| Total | | $ | 2,702 |
| | $ | 19 |
| | $ | — |
| | $ | — |
| | $ | 2,702 |
| | $ | 19 |
| September 30, 2017 | | | | | | | | | | | | | Obligations of states and political subdivisions | | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Mortgage-backed securities | | 406 |
| | 1 |
| | — |
| | — |
| | 406 |
| | 1 |
| Total | | $ | 406 |
| | $ | 1 |
| | $ | — |
| | $ | — |
| | $ | 406 |
| | $ | 1 |
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| Available-for-sale securities |
| | | | | | | | | | | | | | | | | | March 31, 2018 | | September 30, 2017 | Available for sale securities | Amortized Cost | | Estimated Fair Value | | Amortized Cost | | Estimated Fair Value | Due in one year or less | $ | 1,378 |
| | $ | 1,372 |
| | $ | 160 |
| | $ | 160 |
| Due after one year through five years | 14,668 |
| | 14,501 |
| | 15,008 |
| | 15,056 |
| Due after five years through ten years | 43,956 |
| | 42,694 |
| | 30,586 |
| | 30,330 |
| Due after ten years | 18,866 |
| | 18,444 |
| | 13,766 |
| | 13,633 |
| | $ | 78,868 |
| | $ | 77,011 |
| | $ | 59,520 |
| | $ | 59,179 |
| Mortgage backed securities | 42,095 |
| | 41,069 |
| | 36,661 |
| | 36,474 |
| Securities without contractual maturities | 125 |
| | 234 |
| | 147 |
| | 230 |
| Total available for sale securities | $ | 121,088 |
| | $ | 118,314 |
| | $ | 96,328 |
| | $ | 95,883 |
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| Available for sale securities with unrealized losses |
Securities with unrealized losses at March 31, 2018 and September 30, 2017, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows:
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Less than 12 Months | | 12 Months or More | | Total | Available for sale securities | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | March 31, 2018 | | | | | | | | | | | | | U.S. government agency obligations | | $ | 25,787 |
| | $ | 310 |
| | $ | 10,471 |
| | $ | 710 |
| | $ | 36,258 |
| | $ | 1,020 |
| Obligations of states and political subdivisions | | 28,889 |
| | 443 |
| | 3,319 |
| | 166 |
| | 32,208 |
| | 609 |
| Mortgage backed securities | | 29,358 |
| | 626 |
| | 9,288 |
| | 430 |
| | 38,646 |
| | 1,056 |
| Agency securities | | 20 |
| | 2 |
| | — |
| | — |
| | 20 |
| | 2 |
| Corporate debt securities | | 5,127 |
| | 250 |
| | — |
| | — |
| | 5,127 |
| | 250 |
| Total | | $ | 89,181 |
| | $ | 1,631 |
| | $ | 23,078 |
| | $ | 1,306 |
| | $ | 112,259 |
| | $ | 2,937 |
| September 30, 2017 | | | | | | | | | | | | | U.S. government agency obligations | | $ | 8,296 |
| | $ | 186 |
| | $ | 6,932 |
| | $ | 262 |
| | $ | 15,228 |
| | $ | 448 |
| Obligations of states and political subdivisions | | 8,170 |
| | 62 |
| | 3,701 |
| | 70 |
| | 11,871 |
| | 132 |
| Mortgage backed securities | | 14,167 |
| | 96 |
| | 9,753 |
| | 215 |
| | 23,920 |
| | 311 |
| Corporate debt securities | | 5,343 |
| | 67 |
| | — |
| | — |
| | 5,343 |
| | 67 |
| Total | | $ | 35,976 |
| | $ | 411 |
| | $ | 20,386 |
| | $ | 547 |
| | $ | 56,362 |
| | $ | 958 |
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