Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2018
Operating Loss Carryforwards [Line Items]
Increase (decrease) in valuation allowance	$ (2,600)	$ 1,000	$ 100
Net operating loss carryforwards	26,600
Cumulative undistributed foreign earnings	98,400
Tax positions related to a prior period	5,471	6,219	$ 4,993	$ 5,787
Deferred tax assets related to operating loss carryforwards, not recorded	4,000
Interest and penalties recorded to provision for income taxes	800
Accrued estimated interest and penalties	1,200	$ 400
Federal and Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	130,100
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	49,700
Tax credit carryforwards	3,700
Indefinite-Lived Carryforwards
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	2,400
Federal
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	5,900
Other Noncurrent Liabilities
Operating Loss Carryforwards [Line Items]
Tax positions related to a prior period	$ 1,500