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Related Party Transactions - Acquisition of Spring11 Ownership Interest from Cantor (Details) - USD ($)	1 Months Ended	3 Months Ended
	Feb. 28, 2023	Mar. 31, 2023	Mar. 31, 2022
Related Party Transaction
Fees to related parties		$ 7,792,000	$ 6,829,000
CFS11 | Spring 11 | Equity Purchase Agreement
Related Party Transaction
Fees to related parties	$ 11,530,598
CFS11 | Spring 11 | Equity Purchase Agreement | Newmark S11 LP LLC
Related Party Transaction
Equity method investment ownership percentage	33.78%
CFS11 | Spring 11 | Equity Purchase Agreement | Newmark S11 | Newmark S11 LP LLC
Related Party Transaction
Equity method investment ownership percentage	100.00%
Economic interest, percentage	25.62%

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