Accumulated Other Comprehensive Loss - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of prior service cost	$ 425	$ 1,556	$ 1,556

Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.

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Name:	us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration