Equity Incentive Plans - Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands		1 Months Ended	3 Months Ended			9 Months Ended
	Feb. 04, 2022 USD ($) day shares	May 31, 2021 $ / shares shares	Sep. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2022 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) $ / shares shares
Number of Shares
Granted (in shares)			0			0
Performance-based awards
Number of Shares
Outstanding (in shares)					1,458	1,458
Outstanding (in shares)	1,458
Market-based awards
Number of Shares
Outstanding (in shares)					1,458	1,458
Outstanding (in shares)	1,458
Weighted Average Remaining Contractual Term (in years)
Market capitalization target, threshold consecutive days	30 days
2021 Plan
Number of Shares
Outstanding (in shares)			0
Granted (in shares)			101
Exercised (in shares)			0
Forfeited or expired (in shares)			0
Outstanding (in shares)			101	0		101
Vested and exercisable (in shares)			0			0
Weighted Average Exercise Price
Outstanding (in usd per share) | $ / shares			$ 0
Granted (in usd per share) | $ / shares			1.98
Exercised (in usd per share) | $ / shares			0
Forfeited or expired (in usd per share) | $ / shares			0
Outstanding (in usd per share) | $ / shares			1.98	$ 0		$ 1.98
Vested and exercisable (in usd per share) | $ / shares			$ 0			$ 0
Aggregate Intrinsic Value
Outstanding | $			$ 0	$ 0		$ 0
Vested and exercisable | $			$ 0			$ 0
Weighted Average Remaining Contractual Term (in years)
Outstanding			9 years 10 months 20 days	0 years
Vested and exercisable						0 years
2018 Plan
Number of Shares
Outstanding (in shares)			3,649	3,681	3,851	3,851
Granted (in shares)		2,191
Exercised (in shares)			(5)	(29)	(114)
Forfeited or expired (in shares)			(110)	(3)	(56)
Outstanding (in shares)			3,534	3,649	3,681	3,534
Vested and exercisable (in shares)			1,849			1,849
Weighted Average Exercise Price
Outstanding (in usd per share) | $ / shares			$ 1.78	$ 1.78	$ 1.77	$ 1.77
Granted (in usd per share) | $ / shares		$ 1.10
Exercised (in usd per share) | $ / shares			0.79	1.05	1.12
Forfeited or expired (in usd per share) | $ / shares			7.75	2.30	1.08
Outstanding (in usd per share) | $ / shares			1.60	$ 1.78	$ 1.78	1.60
Vested and exercisable (in usd per share) | $ / shares			$ 1.18			$ 1.18
Aggregate Intrinsic Value
Outstanding | $			$ 84	$ 11,307	$ 23,918	$ 84
Vested and exercisable | $			$ 82			$ 82
Weighted Average Remaining Contractual Term (in years)
Outstanding			8 years 3 months 14 days	8 years 4 months 6 days	8 years 7 months 13 days
Vested and exercisable						7 years 9 months 18 days
2018 Plan | Service-based awards
Number of Shares
Outstanding (in shares)			2,478			2,478
2018 Plan | Performance-based awards
Number of Shares
Outstanding (in shares)			0			0
2018 Plan | Market-based awards
Number of Shares
Outstanding (in shares)			1,056			1,056
Weighted Average Remaining Contractual Term (in years)
Market capitalization target | $	$ 1,000,000
Market capitalization target, threshold days | day	20
Market capitalization target, threshold consecutive days	30 days