Investments - Summary of Selected Financial Information for JCP Fund V (Details) - JCP Fund V - USD ($) $ in Thousands	3 Months Ended
Feb. 29, 2020	Dec. 31, 2019	Feb. 28, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Net gains (losses) from our investments in JCP Fund V	$ 1,500		$ (3,200)
Net decrease in net assets resulting from operations		$ (1,397)		$ (8,412)

Amount of unrealized gain (loss) recognized in the income statement on unsold other securities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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