Financial Instruments and Fair Value Disclosures - (Fair Value Measured On Recurring Basis) (Details) - USD ($) $ in Thousands	May 31, 2020	Nov. 30, 2019
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments available-for-sale	$ 53,585	$ 51,938
Financial Services \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	1,238	24,679
Residential \| Financial Services \| Fair Value, Measurements, Recurring \| RMF loans held-for-sale
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	963,500	1,400,000
Aggregate fair value of loans (below) in excess of principal balance	40,000	42,200
Residential \| Financial Services \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	1,003,470	1,447,715
Commercial \| Financial Services \| Fair Value, Measurements, Recurring \| RMF loans held-for-sale
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	156,200	196,300
Aggregate fair value of loans (below) in excess of principal balance	3,700	900
Commercial \| Financial Services \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 159,886	$ 197,224

Fair Value, Option, Principal Amount Outstanding, Loans and Long-Term Receivables

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 45
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of loans and long-term receivables (other than securities categorized as trading, available-for-sale or held-to-maturity) that have contractual principal amounts and for which the fair value option has been elected.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612

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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

No definition available.

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

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