Fair Value Measurements - Schedule of Financial Assets and Liabilities Subject to Fair Value Measurements on a Recurring Basis and the Level of Inputs Used (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets:
Marketable investments	$ 144,566	$ 389,671
Liabilities:
Warrant liabilities	1,069	3,005
U.S. treasury securities
Assets:
Marketable investments	86,784	188,480
U.S. agency and government sponsored securities
Assets:
Marketable investments	2,732	4,924
Corporate bonds
Assets:
Marketable investments	44,906	109,909
Asset-backed securities
Assets:
Marketable investments		11,835
Fair Value, Recurring
Assets:
Total cash equivalents	103,436	42,056
Marketable equity investments	7,755	29,643
Total marketable investments	150,727	419,314
Fair Value, Recurring | Private Warrants
Liabilities:
Warrant liabilities	1,069	3,005
Fair Value, Recurring | U.S. treasury securities
Assets:
Marketable investments	86,784	188,480
Fair Value, Recurring | U.S. agency and government sponsored securities
Assets:
Marketable investments	2,732	4,924
Fair Value, Recurring | Commercial paper
Assets:
Marketable investments	9,647	74,523
Fair Value, Recurring | Corporate bonds
Assets:
Marketable investments	43,809	109,909
Fair Value, Recurring | Asset-backed securities
Assets:
Marketable investments		11,835
Fair Value, Recurring | Money market funds
Assets:
Total cash equivalents	101,842	42,056
Fair Value, Recurring | Commercial paper
Assets:
Total cash equivalents	497
Fair Value, Recurring | Corporate bonds
Assets:
Total cash equivalents	1,097
Level 1 | Fair Value, Recurring
Assets:
Total cash equivalents	101,842	42,056
Marketable equity investments	7,755	29,643
Total marketable investments	94,539	218,123
Level 1 | Fair Value, Recurring | Private Warrants
Liabilities:
Warrant liabilities	0	0
Level 1 | Fair Value, Recurring | U.S. treasury securities
Assets:
Marketable investments	86,784	188,480
Level 1 | Fair Value, Recurring | U.S. agency and government sponsored securities
Assets:
Marketable investments	0	0
Level 1 | Fair Value, Recurring | Commercial paper
Assets:
Marketable investments	0	0
Level 1 | Fair Value, Recurring | Corporate bonds
Assets:
Marketable investments	0	0
Level 1 | Fair Value, Recurring | Asset-backed securities
Assets:
Marketable investments		0
Level 1 | Fair Value, Recurring | Money market funds
Assets:
Total cash equivalents	101,842	42,056
Level 1 | Fair Value, Recurring | Commercial paper
Assets:
Total cash equivalents	0
Level 1 | Fair Value, Recurring | Corporate bonds
Assets:
Total cash equivalents	0
Level 2 | Fair Value, Recurring
Assets:
Total cash equivalents	1,594	0
Marketable equity investments	0	0
Total marketable investments	56,188	201,191
Level 2 | Fair Value, Recurring | Private Warrants
Liabilities:
Warrant liabilities	0	0
Level 2 | Fair Value, Recurring | U.S. treasury securities
Assets:
Marketable investments	0	0
Level 2 | Fair Value, Recurring | U.S. agency and government sponsored securities
Assets:
Marketable investments	2,732	4,924
Level 2 | Fair Value, Recurring | Commercial paper
Assets:
Marketable investments	9,647	74,523
Level 2 | Fair Value, Recurring | Corporate bonds
Assets:
Marketable investments	43,809	109,909
Level 2 | Fair Value, Recurring | Asset-backed securities
Assets:
Marketable investments		11,835
Level 2 | Fair Value, Recurring | Money market funds
Assets:
Total cash equivalents	0	0
Level 2 | Fair Value, Recurring | Commercial paper
Assets:
Total cash equivalents	497
Level 2 | Fair Value, Recurring | Corporate bonds
Assets:
Total cash equivalents	1,097
Level 3 | Fair Value, Recurring
Assets:
Total cash equivalents	0	0
Marketable equity investments	0	0
Total marketable investments	0	0
Level 3 | Fair Value, Recurring | Private Warrants
Liabilities:
Warrant liabilities	1,069	3,005
Level 3 | Fair Value, Recurring | U.S. treasury securities
Assets:
Marketable investments	0	0
Level 3 | Fair Value, Recurring | U.S. agency and government sponsored securities
Assets:
Marketable investments	0	0
Level 3 | Fair Value, Recurring | Commercial paper
Assets:
Marketable investments	0	0
Level 3 | Fair Value, Recurring | Corporate bonds
Assets:
Marketable investments	0	0
Level 3 | Fair Value, Recurring | Asset-backed securities
Assets:
Marketable investments		0
Level 3 | Fair Value, Recurring | Money market funds
Assets:
Total cash equivalents	0	$ 0
Level 3 | Fair Value, Recurring | Commercial paper
Assets:
Total cash equivalents	0
Level 3 | Fair Value, Recurring | Corporate bonds
Assets:
Total cash equivalents	$ 0