Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Measurements

Summary of financial assets and liabilities measured on recurring basis

	March 31, 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	$	246,954	$	—	$	—	$	246,954	$	283,358	$	—	$	—	$	283,358
Liquid demand deposits		126,986		—		—		126,986		125,596		—		—		125,596
U.S. Treasury securities		334,404		—		—		334,404		346,057		—		—		346,057
Corporate bonds and notes		—		18,719		—		18,719		—		23,529		—		23,529
Municipal securities		—		55,735		—		55,735		—		62,715		—		62,715
Total financial assets	$	708,344	$	74,454	$	—	$	782,798	$	755,011	$	86,244	$	—	$	841,255