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		9 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Mortgage servicing rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 3,221	$ 2,602	$ 2,492	$ 2,113
Purchases/loan originations	93	56	275	499
Sales/loan originations sold, including those not settled	0	0	0	0
Disposals/settlements	(54)	(127)	(320)	(1,222)
Changes in fair value	96	(149)	909	992
Interest and principal paydowns	0	0	0	0
Ending balance	3,356	2,382	3,356	2,382
LMF Commercial loans held-for-sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	84,205	163,920	68	193,588
Purchases/loan originations	109,850	178,669	518,345	599,465
Sales/loan originations sold, including those not settled	(188,266)	(226,357)	(511,733)	(665,062)
Disposals/settlements	0	(4,092)	0	(11,392)
Changes in fair value	693	1,391	247	(2,551)
Interest and principal paydowns	(35)	(402)	(480)	(919)
Ending balance	$ 6,447	$ 113,129	$ 6,447	$ 113,129