Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2023

Fair Value Measurements

Summary of financial assets and liabilities measured on recurring basis

	June 30, 2023								December 31, 2022
	Level I		Level II		Level III		Total		Level I		Level II		Level III		Total
	(in thousands)
Financial Assets:
Money market deposits	$	216,337	$	—	$	—	$	216,337	$	283,358	$	—	$	—	$	283,358
Liquid demand deposits		128,562		—		—		128,562		125,596		—		—		125,596
U.S. Treasury securities		296,490		—		—		296,490		346,057		—		—		346,057
Corporate bonds and notes		—		8,901		—		8,901		—		23,529		—		23,529
Municipal securities		—		49,437		—		49,437		—		62,715		—		62,715
Total financial assets	$	641,389	$	58,338	$	—	$	699,727	$	755,011	$	86,244	$	—	$	841,255