Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis

The following table summarizes our financial assets measured at fair value on a recurring basis (in thousands):

	June 30, 2022
	Total		Level 1		Level 2		Level 3
Financial Assets:
Money market funds	$	224,325	$	224,325	$	—	$	—
Corporate debt securities		63,362		—		63,362		—
U.S. government agency securities		49,124		—		49,124		—
Certificates of deposits		1,942		—		1,942		—
U.S. government securities		192,485		—		192,485		—
U.S. treasury bills		100,956		5,000		95,956		—
Total financial assets	$	632,194	$	229,325	$	402,869	$	—
	December 31, 2021
	Total		Level 1		Level 2		Level 3
Financial Assets:
Money market funds	$	671,845	$	671,845	$	—	$	—
Corporate debt securities		10,006		—		10,006		—
U.S. government agency securities		4,843		—		4,843		—
Certificates of deposits		244		—		244		—
U.S. government securities		34,964		—		34,964		—
Total financial assets	$	721,902	$	671,845	$	50,057	$	—