Fair Value Measurements and Marketable Securities Available For Sale - Schedule of Marketable securities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Cash equivalents:
Cash equivalents	$ 51,182	$ 84,708
Marketable securities:
Marketable securities	631,496	632,969
Total financial assets	682,678	717,677
Financial liabilities:
Warrants	4,713	11,037
Money Market Funds [Member]
Cash equivalents:
Cash equivalents	39,188	53,292
Commercial Paper [Member]
Cash equivalents:
Cash equivalents	5,996	30,845
Marketable securities:
Marketable securities	34,543	16,892
U.S. Government Securities [Member]
Cash equivalents:
Cash equivalents	5,998
Certificate of deposits [Member]
Marketable securities:
Marketable securities	8,304	3,000
Corporate Bonds [Member]
Cash equivalents:
Cash equivalents		571
Marketable securities:
Marketable securities	285,704	320,192
U.S. Government And Government Agency Securities [Member]
Marketable securities:
Marketable securities	292,678	267,267
Municipal Bonds [Member]
Marketable securities:
Marketable securities	10,267	10,821
Exchange Traded Funds [Member]
Marketable securities:
Marketable securities		14,797
Level 1 [Member]
Cash equivalents:
Cash equivalents	39,188	53,292
Marketable securities:
Marketable securities	0	14,797
Total financial assets	39,188	68,089
Financial liabilities:
Warrants	4,542	10,631
Level 1 [Member] | Money Market Funds [Member]
Cash equivalents:
Cash equivalents	39,188	53,292
Level 1 [Member] | Commercial Paper [Member]
Cash equivalents:
Cash equivalents	0	0
Marketable securities:
Marketable securities	0	0
Level 1 [Member] | U.S. Government Securities [Member]
Cash equivalents:
Cash equivalents	0
Level 1 [Member] | Certificate of deposits [Member]
Marketable securities:
Marketable securities	0	0
Level 1 [Member] | Corporate Bonds [Member]
Cash equivalents:
Cash equivalents		0
Marketable securities:
Marketable securities	0	0
Level 1 [Member] | U.S. Government And Government Agency Securities [Member]
Marketable securities:
Marketable securities	0	0
Level 1 [Member] | Municipal Bonds [Member]
Marketable securities:
Marketable securities	0	0
Level 1 [Member] | Exchange Traded Funds [Member]
Marketable securities:
Marketable securities		14,797
Level 2 [Member]
Cash equivalents:
Cash equivalents	11,994	31,416
Marketable securities:
Marketable securities	631,496	618,172
Total financial assets	643,490	649,588
Financial liabilities:
Warrants	0	0
Level 2 [Member] | Money Market Funds [Member]
Cash equivalents:
Cash equivalents		0
Level 2 [Member] | Commercial Paper [Member]
Cash equivalents:
Cash equivalents	5,996	30,845
Marketable securities:
Marketable securities	34,543	16,892
Level 2 [Member] | U.S. Government Securities [Member]
Cash equivalents:
Cash equivalents	5,998
Level 2 [Member] | Certificate of deposits [Member]
Marketable securities:
Marketable securities	8,304	3,000
Level 2 [Member] | Corporate Bonds [Member]
Cash equivalents:
Cash equivalents		571
Marketable securities:
Marketable securities	285,704	320,192
Level 2 [Member] | U.S. Government And Government Agency Securities [Member]
Marketable securities:
Marketable securities	292,678	267,267
Level 2 [Member] | Municipal Bonds [Member]
Marketable securities:
Marketable securities	10,267	10,821
Level 2 [Member] | Exchange Traded Funds [Member]
Marketable securities:
Marketable securities		0
Level 3 [Member]
Cash equivalents:
Cash equivalents	0	0
Marketable securities:
Marketable securities	0	0
Total financial assets	0	0
Financial liabilities:
Warrants	171	406
Level 3 [Member] | Money Market Funds [Member]
Cash equivalents:
Cash equivalents		0
Level 3 [Member] | Commercial Paper [Member]
Cash equivalents:
Cash equivalents	0	0
Marketable securities:
Marketable securities	0	0
Level 3 [Member] | U.S. Government Securities [Member]
Cash equivalents:
Cash equivalents	0
Level 3 [Member] | Certificate of deposits [Member]
Marketable securities:
Marketable securities	0	0
Level 3 [Member] | Corporate Bonds [Member]
Cash equivalents:
Cash equivalents		0
Marketable securities:
Marketable securities	0	0
Level 3 [Member] | U.S. Government And Government Agency Securities [Member]
Marketable securities:
Marketable securities	0	0
Level 3 [Member] | Municipal Bonds [Member]
Marketable securities:
Marketable securities	$ 0	0
Level 3 [Member] | Exchange Traded Funds [Member]
Marketable securities:
Marketable securities		$ 0