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Shareholders' Equity (Tables) | 6 Months Ended
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Mar. 31, 2018
Shareholders' Equity |
Schedule of components of accumulated other comprehensive income (loss) |
|  | March 31, |  | September 30, |
|  | 2018 |  | 2017 |
|  | (in thousands) |
Pre-tax amounts: |  |  |  |  |  |  |
Unrealized appreciation on securities |  | $ | 19,908 |  | $ | 31,700 |
Unrealized actuarial loss |  |  | (27,952) |  |  | (28,873) |
|  | $ | (8,044) |  | $ | 2,827 |
After-tax amounts: |  |  |  |  |  |  |
Unrealized appreciation on securities |  | $ | 11,901 |  | $ | 20,070 |
Unrealized actuarial loss |  |  | (17,122) |  |  | (17,770) |
|  | $ | (5,221) |  | $ | 2,300 |
Summary of the changes in accumulated other comprehensive income (loss), net of tax, by component |
|  | Three Months Ended March 31, 2018 |
|  | Unrealized |  |  |  |  |  |  |
|  | Appreciation |  |  |  |  |  |  |
|  | (Depreciation) on |  | Defined |  |  |  |
|  | Available-for-sale |  | Benefit |  |  |  |
|  | Securities |  | Pension Plan |  | Total |
|  | (in thousands) |
Balance at January 1, 2018 |  | $ | 19,469 |  | $ | (17,430) |  | $ | 2,039 |
Other comprehensive loss before reclassifications |  |  | (7,568) |  |  | — |  |  | (7,568) |
Amounts reclassified from accumulated other comprehensive income |  |  | — |  |  | 308 |  |  | 308 |
Net current-period other comprehensive income (loss) |  |  | (7,568) |  |  | 308 |  |  | (7,260) |
Balance at March 31, 2018 |  | $ | 11,901 |  | $ | (17,122) |  | $ | (5,221) |
|  | Six Months Ended March 31, 2018
|  | Unrealized |  |  |  |  |  |
|  | Appreciation |  |  |  |  |
|  | (Depreciation) on |  | Defined |  |  |
|  | Available-for-sale |  | Benefit |  |  |
|  | Securities |  | Pension Plan |  | Total
|  | (in thousands)
Balance at October 1, 2017 |  | $ | 20,070 |  | $ | (17,770) |  | $ | 2,300
Other comprehensive loss before reclassifications |  |  | (8,169) |  |  | — |  |  | (8,169)
Amounts reclassified from accumulated other comprehensive income |  |  | — |  |  | 648 |  |  | 648
Net current-period other comprehensive income (loss) |  |  | (8,169) |  |  | 648 |  |  | (7,521)
Balance at March 31, 2018 |  | $ | 11,901 |  | $ | (17,122) |  | $ | (5,221)
Schedule of accumulated other comprehensive income (loss) components which were reclassified to the Statement of Operations |
|  | Reclassified from |  | Reclassified from |  |  |
|  | Accumulated Other |  | Accumulated Other |  |  |
|  | Comprehensive |  | Comprehensive |  |  |
|  | Income (Loss) |  | Income (Loss) |  |  |
|  | Three Months Ended |  | Six Months Ended |  |  |
Details About Accumulated Other |  | March 31, |  | March 31, |  | Affected Line Item in the |
Comprehensive Income (Loss) Components |  | 2018 |  | 2017 |  | 2018 |  | 2017 |  | Consolidated Statements of Operations |
|  |  | (in thousands) |  |  | (in thousands) |  |  |
Amortization of net actuarial loss on defined benefit pension plan |  | $ | (460) |  | $ | (575) |  | $ | (921) |  | $ | (1,150) |  | General and administrative |
|  |  | 152 |  |  | 209 |  |  | 273 |  |  | 418 |  | Income tax provision |
Total reclassifications for the period |  | $ | (308) |  | $ | (366) |  | $ | (648) |  | $ | (732) |  | Net of tax |

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