Corporate Investments and Funds Held For Clients (Tables)

3 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Cash and Cash Equivalents and Investments

The tables below present our cash and cash equivalents, the funds held for clients cash and cash equivalents as well as the investments that were included within funds held for clients on the consolidated balance sheets:

	March 31, 2024
Type of issue	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
Cash and cash equivalents	$	371,325	$	—	$	—		$	371,325
Funds held for clients cash and cash equivalents		2,618,450		—		—			2,618,450
Available-for-sale securities(1):
U.S. treasury securities		109,960		—		(419	)		109,541
Total investments	$	3,099,735	$	—	$	(419	)	$	3,099,316
	December 31, 2023
Type of issue	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
Cash and cash equivalents	$	294,025	$	—	$	—		$	294,025
Funds held for clients cash and cash equivalents		2,128,735		—		—			2,128,735
Available-for-sale securities(1):
Certificates of deposit		25,000		—		—			25,000
U.S. treasury securities		174,887		—		(1,256	)		173,631
Total investments	$	2,622,647	$	—	$	(1,256	)	$	2,621,391

(1)All available-for-sale securities were included within the 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

The unrealized losses and fair values of available-for-sale securities that have been in an unrealized loss position for a period of less than and greater than 12 months as of March 31, 2024, are as follows:

	March 31, 2024
	Securities in unrealized loss position for less than 12 months				Securities in unrealized loss position for greater than 12 months					Total
Type of issue	Gross unrealized losses		Fair value		Gross unrealized losses			Fair value		Gross unrealized losses			Fair value
U.S. treasury securities	$	—	$	—	$	(419	)	$	109,541	$	(419	)	$	109,541
Total	$	—	$	—	$	(419	)	$	109,541	$	(419	)	$	109,541

The unrealized losses and fair values of available-for-sale securities that have been in an unrealized loss position for a period of less than and greater than 12 months as of December 31, 2023, are as follows:

	December 31, 2023
	Securities in unrealized loss position for less than 12 months				Securities in unrealized loss position for greater than 12 months					Total
Type of issue	Gross unrealized losses		Fair value		Gross unrealized losses			Fair value		Gross unrealized losses			Fair value
U.S. treasury securities	$	—	$	—	$	(1,256	)	$	173,631	$	(1,256	)	$	173,631
Total	$	—	$	—	$	(1,256	)	$	173,631	$	(1,256	)	$	173,631

Summary of Expected Maturities of Available for Sale Securities

Expected maturities of available-for-sale securities at March 31, 2024 are as follows:

Expected maturity	Amortized cost		Fair value
One year or less	$	109,960	$	109,541
One year to five years	$	—	$	—
Total available-for-sale securities	$	109,960	$	109,541