Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Cash and securities segregated, at cost	$ 495,391	$ 859,448
Limited partners units issued (in units)	292,107,907	286,609,212
Limited partners, units outstanding (in shares)	292,107,907	286,609,212