Share-Based Compensation - Summary of Stock Option Activity (Details)	9 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Options Outstanding
Beginning balance (in shares) | shares	21,843,781
Granted (in shares) | shares	1,605,000
Exercised (in shares) | shares	(72,334)
Expired (in shares) | shares	(737,963)
Forfeited (in shares) | shares	(234,662)
Ending balance (in shares) | shares	22,403,822
Vested at end of period (in shares) | shares	18,039,489
Expected to vest at end of period (in shares) | shares	4,364,333
Weighted Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 1.74
Granted (in dollars per share) | $ / shares	1.01
Exercised (in dollars per share) | $ / shares	0.53
Expired (in dollars per share) | $ / shares	2.48
Forfeited (in dollars per share) | $ / shares	2.30
Ending balance (in dollars per share) | $ / shares	1.67
Vested at end of period (in dollars per share) | $ / shares	1.51
Expected to vest at end of period (in dollars per share) | $ / shares	$ 2.16
Weighted Average Remaining Contractual Life (Years)
Outstanding	7 years 6 months 3 days
Vested at end of period (in years)	7 years 3 months 21 days
Expected to vest at end of period (in years)	8 years 4 months 9 days
Aggregate Intrinsic Value
Outstanding at beginning period | $	$ 0
Outstanding at end of period | $	0
Vested at end of period | $	0
Expected to vest at end of period | $	$ 0