Investment in Limited Partnership - Reconciliation of Receivable For Maturity of Life Settlements (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Aug. 31, 2020	Aug. 31, 2020
Receivable From Maturity Of Life Settlement [Roll Forward]
Balance at start	$ 28,550	$ 13,726
Maturities	43,225	133,275
Less: proceeds received	32,050	107,276
Receivable at August 31, 2020	$ 39,725	$ 39,725