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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Nov. 30, 2020
Equity [Abstract] |
Changes in the balances of each component of accumulated other comprehensive loss | The following table presents the changes in the balances of each component of accumulated other comprehensive loss (in thousands):
Postretirement Benefit Plan Adjustments |  |  | Total Accumulated Other Comprehensive Loss
Balance at November 30, 2018 |  |  | $ | (9,565) |
Other comprehensive loss before reclassifications |  |  | (10,268) |
Amounts reclassified from accumulated other comprehensive loss |  |  | 2,130 |
Income tax benefit related to items of other comprehensive loss |  |  | 2,197 |
Other comprehensive loss, net of tax |  |  | (5,941) |
Postretirement Benefit Plan Adjustments |  |  | Total Accumulated Other Comprehensive Loss
Balance at November 30, 2019 |  |  | $ | (15,506) |
Other comprehensive loss before reclassifications |  |  | (8,412) |
Amounts reclassified from accumulated other comprehensive loss |  |  | 1,388 |
Income tax benefit related to items of other comprehensive loss |  |  | 1,897 |
Other comprehensive loss, net of tax |  |  | (5,127) |
Reclassification of stranded tax effects to retained earnings |  |  | (1,643) |
Balance at November 30, 2020 |  |  | $ | (22,276) |
Amounts reclassified from accumulated other comprehensive loss | The amounts reclassified from accumulated other comprehensive loss consisted of the following (in thousands):
|  | Years Ended November 30,
Details About Accumulated Other Comprehensive Loss Components |  | 2020 |  | 2019 |  | 2018
Postretirement benefit plan adjustments |  |  |  |  |  |
Amortization of net actuarial loss |  | $ | 963 |  |  | $ | 218 |  |  | $ | 336 |
Amortization of prior service cost |  | 425 |  |  | 1,556 |  |  | 1,556 |
Settlement loss |  | — |  |  | 356 |  |  | — |
Total reclassifications (a) |  | $ | 1,388 |  |  | $ | 2,130 |  |  | $ | 1,892 |
(a)The accumulated other comprehensive loss components are included in the computation of net periodic benefit costs as further discussed in Note 22 – Postretirement Benefits.

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