Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2024

Fair Value Measurements

Schedule of assets measured at fair value on a recurring basis

Assets measured at fair value on a recurring basis are summarized below (in thousands):

	Fair Value Measurements as of June 30, 2024
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds and bond funds	$	662,797	$	—	$	662,797	$	—
Commercial paper		29,712		—		29,712		—
		692,509		—		692,509		—
Investments in Other Companies		6,075		—		—		6,075
Cash and Cash Equivalents		141,760		141,760		—		—
Total Assets Measured at Fair Value	$	840,344	$	141,760	$	692,509	$	6,075

	Fair Value Measurements as of December 31, 2023
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds and bond funds	$	677,074	$	—	$	677,074	$	—
Commercial paper		9,872		—		9,872		—
		686,946		—		686,946		—
Investments in Other Companies		15,402		2,925		—		12,477
Cash and Cash Equivalents		148,277		148,277		—		—
Total Assets Measured at Fair Value	$	850,625	$	151,202	$	686,946	$	12,477