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SHAREHOLDERS' EQUITY (Tables) | 12 Months Ended
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Sep. 30, 2020
Stockholders' Equity Note [Abstract] |
Components of Accumulated Other Comprehensive Income (Loss) | Components of accumulated other comprehensive income (loss) were as follows:
| September 30,
(in thousands) | 2020 |  | 2019 |  | 2018
Pre-tax amounts: |  |  |  |  |
Unrealized appreciation on securities (1) | $ | — |  |  | $ | — |  |  | $ | 44,023 |
Unrealized actuarial loss | (33,923 | ) |  | (37,084 | ) |  | (21,693 | )
| $ | (33,923 | ) |  | $ | (37,084 | ) |  | $ | 22,330 |
After-tax amounts: |  |  |  |  |
Unrealized appreciation on securities (1) | $ | — |  |  | $ | — |  |  | $ | 29,071 |
Unrealized actuarial loss | (26,188 | ) |  | (28,635 | ) |  | (12,521 | )
| $ | (26,188 | ) |  | $ | (28,635 | ) |  | $ | 16,550 |
(1) We adopted ASU No. 2016-01 on October 1, 2018. The standard requires that changes in the fair value of our equity investments must be recognized in net income.
Summary of Changes in Accumulated Other Comprehensive Income (Loss) | The following is a summary of the changes in accumulated other comprehensive loss, net of tax, by component for the fiscal year ended September 30, 2020:
(in thousands) | Defined Benefit Pension Plan
Balance at September 30, 2019 | $ | (28,635 | )
Activity during the period |
Amounts reclassified from accumulated other comprehensive loss | 2,447 |
Net current-period other comprehensive loss | 2,447 |
Balance at September 30, 2020 | $ | (26,188 | )

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