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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Nov. 30, 2018
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, 2016 |  |  | $ | (16,057 | )
Other comprehensive loss before reclassifications |  |  | (3,143 | )
Amounts reclassified from accumulated other comprehensive loss |  |  | 1,698 |
Income tax benefit related to items of other comprehensive loss |  |  | 578 |
Other comprehensive loss, net of tax |  |  | (867 | )
Balance at November 30, 2017 |  |  | (16,924 | )
Other comprehensive income before reclassifications |  |  | 8,216 |
Amounts reclassified from accumulated other comprehensive loss |  |  | 1,892 |
Income tax expense related to items of other comprehensive income |  |  | (2,749 | )
Other comprehensive income, net of tax |  |  | 7,359 |
Balance at November 30, 2018 |  |  | $ | (9,565 | )
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 |  | 2018 |  | 2017 |  | 2016
Postretirement benefit plan adjustments |  |  |  |  |  |
Amortization of net actuarial loss |  | $ | 336 |  |  | $ | 142 |  |  | $ | 79 |
Amortization of prior service cost |  | 1,556 |  |  | 1,556 |  |  | 1,556 |
Total reclassifications (a) |  | $ | 1,892 |  |  | $ | 1,698 |  |  | $ | 1,635 |
(a) | The accumulated other comprehensive loss components are included in the computation of net periodic benefit costs as further discussed in Note 20 – Postretirement Benefits.

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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