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Fair Value Measurements - Assets And Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Feb. 29, 2020
Nov. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment in limited partnership $ 143,201 $ 137,849 [1]
Investment in life settlements   1,297
Investment fair value 143,201 139,146
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment in limited partnership 0 0
Investment in life settlements   0
Investment fair value 0 0
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment in limited partnership 0 0
Investment in life settlements   0
Investment fair value 0 0
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment in limited partnership 143,201 137,849
Investment in life settlements   1,297
Investment fair value $ 143,201 $ 139,146
[1] Derived from audited consolidated financial statements.