Commitments and Contingencies (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Leasehold Improvements
Loss Contingencies [Line Items]
Leasehold improvements	$ 1.1
New York
Loss Contingencies [Line Items]
Operating lease, impairment loss		$ 0.3		$ 0.3
San Francisco
Loss Contingencies [Line Items]
Operating lease, impairment loss			$ 3.7		$ 3.7
San Francisco | Right-of-Use Asset
Loss Contingencies [Line Items]
Operating lease, impairment loss	$ 2.6
Office leases, payment guarantees
Loss Contingencies [Line Items]
Guarantees		$ 2.7		$ 2.7		$ 2.7