Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2023

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value

Assets and liabilities measured at fair value at each balance sheet date are as follows (in thousands):

	June 30, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	109,800	$	—	$	—	$	109,800
Short-term marketable securities:
U.S. government treasuries	993,536		—		—		993,536
U.S. government agency securities	—		26,666		—		26,666
Corporate debt securities	—		19,032		—		19,032
Commercial paper	—		19,780		—		19,780
Total	$	1,103,336	$	65,478	$	—	$	1,168,814

	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	105,340	$	—	$	—	$	105,340
U.S. government treasuries	43,781		—		—		43,781
Commercial paper	—		9,948		—		9,948
Short-term marketable securities:
U.S. government treasuries	1,003,504		—		—		1,003,504
U.S. government agency securities	—		16,861		—		16,861
Corporate debt securities	—		54,215		—		54,215
Commercial paper	—		43,591		—		43,591
Total	$	1,152,625	$	124,615	$	—	$	1,277,240