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	Mar. 31, 2023	Dec. 31, 2022
Assets:
Marketable investments:	$ 336,474	$ 389,671
Liabilities:
Warrant liabilities	4,059	3,005
U.S. treasury securities
Assets:
Marketable investments:	226,889	188,480
U.S. agency and government sponsored securities
Assets:
Marketable investments:	4,975	4,924
Corporate bonds
Assets:
Marketable investments:	72,918	109,909
Asset-backed securities
Assets:
Marketable investments:	4,490	11,835
Fair Value, Recurring
Assets:
Total cash equivalents	64,029	42,056
Marketable equity investments	25,716	29,643
Total marketable investments	332,363	419,314
Fair Value, Recurring | Private Warrants
Liabilities:
Warrant liabilities	4,059	3,005
Fair Value, Recurring | U.S. treasury securities
Assets:
Marketable investments:	197,062	188,480
Fair Value, Recurring | U.S. agency and government sponsored securities
Assets:
Marketable investments:	4,975	4,924
Fair Value, Recurring | Commercial paper
Assets:
Marketable investments:	27,202	74,523
Fair Value, Recurring | Corporate bonds
Assets:
Marketable investments:	72,918	109,909
Fair Value, Recurring | Asset-backed securities
Assets:
Marketable investments:	4,490	11,835
Fair Value, Recurring | Money market funds
Assets:
Total cash equivalents	34,202	42,056
Fair Value, Recurring | U.S. treasury securities
Assets:
Total cash equivalents	29,827
Level 1 | Fair Value, Recurring
Assets:
Total cash equivalents	64,029	42,056
Marketable equity investments	25,716	29,643
Total marketable investments	222,778	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:	197,062	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	0
Level 1 | Fair Value, Recurring | Money market funds
Assets:
Total cash equivalents	34,202	42,056
Level 1 | Fair Value, Recurring | U.S. treasury securities
Assets:
Total cash equivalents	29,827
Level 2 | Fair Value, Recurring
Assets:
Total cash equivalents	0	0
Marketable equity investments	0	0
Total marketable investments	109,585	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:	4,975	4,924
Level 2 | Fair Value, Recurring | Commercial paper
Assets:
Marketable investments:	27,202	74,523
Level 2 | Fair Value, Recurring | Corporate bonds
Assets:
Marketable investments:	72,918	109,909
Level 2 | Fair Value, Recurring | Asset-backed securities
Assets:
Marketable investments:	4,490	11,835
Level 2 | Fair Value, Recurring | Money market funds
Assets:
Total cash equivalents	0	0
Level 2 | Fair Value, Recurring | U.S. treasury securities
Assets:
Total cash equivalents	0
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	4,059	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	0
Level 3 | Fair Value, Recurring | Money market funds
Assets:
Total cash equivalents	0	$ 0
Level 3 | Fair Value, Recurring | U.S. treasury securities
Assets:
Total cash equivalents	$ 0