Financial Instruments and Fair Value Disclosures - (Reconciliation Of Beginning And Ending Balance For The Company's Level 3 Recurring Fair Value Measurements) (Details) - Financial Services - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Mortgage servicing rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 2,492	$ 2,113
Purchases/loan originations	82	424
Sales/loan originations sold, including those not settled	0	0
Disposals/settlements	(159)	(1,038)
Changes in fair value	378	0
Interest and principal paydowns	0	0
Ending balance	2,793	1,499
LMF Commercial loans held-for-sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	68	193,588
Purchases/loan originations	264,845	219,500
Sales/loan originations sold, including those not settled	(178,082)	(282,965)
Disposals/settlements	0	0
Changes in fair value	(590)	(6,767)
Interest and principal paydowns	(446)	(208)
Ending balance	$ 85,795	$ 123,148