Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2023

Fair Value Measurements

Summary of financial assets and liabilities measured on recurring basis

	December 31, 2023								December 31, 2022
	Level I		Level II		Level III		Total		Level I		Level II		Level III		Total
	(in thousands)
Financial Assets:
Cash, cash equivalents and restricted cash (1)		642,095		—		—		642,095		466,091		—		—		466,091
U.S. Treasury securities		200,418		—		—		200,418		346,057		—		—		346,057
Corporate bonds and notes		—		—		—		—		—		23,529		—		23,529
Municipal securities		—		36,464		—		36,464		—		62,715		—		62,715
Total financial assets	$	842,513	$	36,464	$	—	$	878,977	$	812,148	$	86,244	$	—	$	898,392