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Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands | 12 Months Ended
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Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2015
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 180,595 | $ 105,615 | $ 84,643
Net actuarial gain (loss) arising during the period | (3,143) | 468 | 3,745
Amortization of net actuarial loss | 142 | 79 | 848
Amortization of prior service cost | 1,556 | 1,556 | 1,556
Other comprehensive income (loss) before tax | (1,445) | 2,103 | 6,149
Income tax benefit (expense) related to items of other comprehensive income (loss) | 578 | (841) | (2,460)
Other comprehensive income (loss), net of tax | (867) | 1,262 | 3,689
Comprehensive income | $ 179,728 | $ 106,877 | $ 88,332

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e557-108580 + Details
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