Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Investments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Sep. 08, 2017
Schedule of Equity Method Investments
(Loss) income from equity method investments		$ (11,562)	$ 7,250	$ 2,750
Distributions received		100	8,600
Equity method investment	$ 88,315	88,315	99,966
Unrealized (gains) loss on marketable securities			12,600	$ 17,900
Knotel, Inc.
Schedule of Equity Method Investments
Unrealized (gains) loss on marketable securities	(84,200)
Write down of investment	50,000
Other Assets
Schedule of Equity Method Investments
Equity method investment	88,300	88,300	100,000
Debt securities	$ 9,900	$ 9,900	$ 94,100
CF Real Estate Finance Holdings, L.P.
Schedule of Equity Method Investments
Equity method investment ownership percentage (in percentage)	27.00%	27.00%
Equity method investment					$ 100,000