Corporate Investments and Funds Held For Clients - Summary of Unrealized Losses and Fair Values of Available-for-Sale Securities that have been in Unrealized Loss Position for Period of Less than and Greater than 12 Months (Details) - Available-for-sale Securities [Member] - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Corporate Investments And Funds Held For Clients [Line Items]
Securities in unrealized loss position for greater than 12 months, Gross unrealized losses	$ (101)	$ (1,256)
Securities in unrealized loss position for greater than 12 months, Fair value	34,894	173,631
Gross unrealized losses	(101)	(1,256)
Fair value	34,894	173,631
U.S. Treasury Securities [Member]
Corporate Investments And Funds Held For Clients [Line Items]
Securities in unrealized loss position for greater than 12 months, Gross unrealized losses	(101)	(1,256)
Securities in unrealized loss position for greater than 12 months, Fair value	34,894	173,631
Gross unrealized losses	(101)	(1,256)
Fair value	$ 34,894	$ 173,631