Cash Equivalents and Marketable Securities - Schedule of Fair Value and Amortized Cost of Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Marketable Securities [Line Items]
Amortized Cost	$ 286,214	$ 123,554	$ 116,311
Amortized Cost	577,654	702,094
Gross Unrealized Gains	6	4
Gross Unrealized Losses	(1,187)	(7,603)
Fair Value	576,473	694,495
Classified as:
Cash equivalents	264,527	107,780
Marketable securities	289,217	516,598
Marketable securities, non-current	22,729	70,117
Total cash equivalents and marketable securities	576,473	694,495
U.S. Treasury securities
Marketable Securities [Line Items]
Amortized Cost	249,643	277,056
Gross Unrealized Gains	6	0
Gross Unrealized Losses	(492)	(5,257)
Fair Value	249,157	271,799
U.S. government agency securities
Marketable Securities [Line Items]
Amortized Cost	69,497	135,460
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(544)	(1,416)
Fair Value	68,953	134,045
Corporate debt securities
Marketable Securities [Line Items]
Amortized Cost	89,714	221,608
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(151)	(930)
Fair Value	89,563	220,681
Money market funds
Marketable Securities [Line Items]
Amortized Cost	168,800	67,970
Fair Value	$ 168,800	$ 67,970