Investments (Details)	1 Months Ended		12 Months Ended
	Jul. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) d	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 08, 2017 USD ($)
Schedule of Equity Method Investments
Equity income of subsidiaries			$ 14,221,000	$ 2,842,000	$ 0
Proceeds from the exercise of redemption option	$ (105,500,000)		(105,501,000)	0	0
Equity method investment		$ 91,300,000		91,300,000
Realized gain (loss) on marketable securities			0	(14,100,000)	1,600,000
Payments to acquire investments			0	2,723,000	$ 8,500,000
Debt securities		$ 8,688,000	4,902,000	$ 8,688,000
Maximum
Schedule of Equity Method Investments
Unrealized gain (loss)			$ 3,800,000
CF Real Estate Finance Holdings, L.P.
Schedule of Equity Method Investments
Equity method investment ownership percentage			27.00%
Rescission of ownership percentage by parent		27.20%		27.20%
Redemption notice, threshold trading days | d		20
Payment for administrative fees		$ 44,000
Equity method investment						$ 100,000,000