Regulatory (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net capital	$ 14,500	$ 14,000
Net capital in excess of required net capital	14,200	13,600
Required net capital	300	400
Restricted cash	1,075	$ 1,062	$ 1,643
Asset Pledged as Collateral
Financial Instruments Owned and Pledged as Collateral [Line Items]
Restricted cash	$ 1,100		$ 1,000