Investment in Limited Partnership - Reconciliation of Premium/Expenses Reserve Account (Details) $ in Thousands	3 Months Ended
Feb. 29, 2020 USD ($)
Distributions And Payments Of Premium/Expenses From Reserve Account [Roll Forward]
Balance at December 1, 2019	$ 4,195
Collections account	26,867
Total distribution received	26,867
Premiums and expenses	26,226
Total payments	26,226
Balance at February 29, 2020	4,836
Class B Interests
Distributions And Payments Of Premium/Expenses From Reserve Account [Roll Forward]
Total distribution received	26,900
Premiums and expenses	2,000
First
Distributions And Payments Of Premium/Expenses From Reserve Account [Roll Forward]
Collections account	26,867
Premiums and expenses	$ 24,226

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Investments in and Advances to Affiliates, Distributions Paid

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