Investment in Limited Partnership - Funds on Deposit in the Collection Account (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Aug. 31, 2020 USD ($)	Aug. 31, 2020 USD ($)
Investments in and Advances to Affiliates [Line Items]
Collections account	$ 34,188	$ 117,138
First
Investments in and Advances to Affiliates [Line Items]
Collections account	34,188	107,169
Second | Class A Interests
Investments in and Advances to Affiliates [Line Items]
Collections account	$ 0	$ 9,969
Internal rate of return guaranteed to majority owner of partnership investment	11.00%	11.00%
Principal balance of proceeds	$ 406,000	$ 406,000
Third | Class B Interests
Investments in and Advances to Affiliates [Line Items]
Collections account	0	0
Fourth
Investments in and Advances to Affiliates [Line Items]
Collections account	$ 0	$ 0
Fourth | Class A Interests
Investments in and Advances to Affiliates [Line Items]
Percentage of equity interest sold	72.50%	72.50%
Fourth | Class B Interests
Investments in and Advances to Affiliates [Line Items]
Equity investment ownership percentage	27.50%	27.50%
Fifth
Investments in and Advances to Affiliates [Line Items]
Collections account	$ 0	$ 0
Fifth | Class A Interests
Investments in and Advances to Affiliates [Line Items]
Percentage of equity interest sold	72.50%	72.50%
Fifth | Class B Interests
Investments in and Advances to Affiliates [Line Items]
Equity investment ownership percentage	27.50%	27.50%