Investments - Summary of Selected Financial Information for JCP Fund V (Details) - JCP Fund V - USD ($) $ in Thousands	3 Months Ended								9 Months Ended
	Aug. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Aug. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Aug. 31, 2020	Aug. 31, 2019
Schedule of Equity Method Investments [Line Items]
Net gains (losses) from our investments in JCP Fund V	$ 2,000				$ (2,500)				$ (3,500)	$ (1,900)
Net increase (decrease) in net assets resulting from operations		$ 6,233	$ (19,893)	$ (1,397)		$ (7,174)	$ (1,169)	$ (8,412)