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Accumulated Other Comprehensive Loss (Amounts reclassified from accumulated other comprehensive loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Nov. 30, 2016 | Nov. 30, 2015 | Nov. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Amortization of net actuarial loss |  | $ 79 | $ 848 | $ 357
Amortization of prior service cost |  | 1,556 | 1,556 | 1,556
Total reclassifications | [1] | 1,635 | $ 2,404 | $ 1,913
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) |  | 100 |  |
Defined Benefit Plan, Future Amortization of Gain (Loss) |  | $ 1,600 |  |
[1] | 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 Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 + Details
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