Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2025	Aug. 31, 2024	Nov. 30, 2024
Income Tax Disclosure [Abstract]
Income tax credits and adjustments	$ 5,300,000	$ 3,900,000	$ 10,100,000	$ 12,800,000
Nondeductible expense	3,600,000	$ 2,400,000	8,800,000	7,900,000
Tax benefits from share-based compensation	200,000		5,600,000	$ 6,500,000
Deferred tax assets	119,200,000		119,200,000		$ 119,200,000
Deferred tax assets, valuation allowance	$ 16,800,000		16,800,000		$ 16,800,000
Adjustments to deferred tax valuation allowance			$ 0