Investment in Limited Partnership - Reconciliation of Receivable For Maturity of Life Settlements (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	May 31, 2020	May 31, 2020
Receivable From Maturity Of Life Settlement [Roll Forward]
Balance at start		$ 13,726
Maturities	$ 43,150	90,050
Less: proceeds received	42,100	75,226
Receivable at May 31, 2020	$ 28,550	$ 28,550