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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, 2020
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2019
Mortgage servicing rights        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance $ 1,238 $ 29,419 $ 24,679 $ 37,206
Purchases/loan originations 563 449 1,917 2,707
Sales/loan originations sold, including those not settled 0 0 0 0
Disposals/settlements (34) (1,544) (10,231) (3,830)
Changes in fair value (411) (5,252) (15,009) (13,011)
Interest and principal paydowns 0 0 0 0
Ending balance 1,356 23,072 1,356 23,072
RMF loans held-for-sale        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance 159,885 259,599 197,224 61,691
Purchases/loan originations 164,380 263,888 582,030 969,200
Sales/loan originations sold, including those not settled (164,527) (347,713) (622,251) (848,262)
Disposals/settlements 0 0 0 (9,920)
Changes in fair value (1,165) 3,502 2,102 6,825
Interest and principal paydowns (1,542) (572) (2,074) (830)
Ending balance $ 157,031 $ 178,704 $ 157,031 $ 178,704