Convertible Preferred Stock and Common Stock Warrants - February 2023 Offering (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Feb. 17, 2023 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) $ / shares shares
Class of Warrant or Right [Line Items]
Common stock, shares issued (in shares) | shares		117,465,938		115,388,135
Common stock, par value (in dollars per share) | $ / shares		$ 0.0001		$ 0.0001
Proceeds from issuance of preferred stock		$ 30,000	$ 0
Warrants exercised | shares		0
Preferred stock issuance costs		$ 311
General and administrative		$ 8,866	$ 10,276
February 2023 Warrants
Class of Warrant or Right [Line Items]
Common stock, shares issued (in shares) | shares	110,204,066
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001
Proceeds from issuance of preferred stock	$ 30,000
Exercise price of warrant (in dollars per share) | $ / shares	$ 0.333
Aggregate estimated fair value of warrants	$ 26,133
Net proceeds from issuance of warrants	$ 3,867
Series A Convertible Preferred Stock
Class of Warrant or Right [Line Items]
Temporary equity, shares issued (in shares) | shares	30,000	30,000		0
Temporary equity, par value (in dollars per share) | $ / shares		$ 0.0001		$ 0.0001
Liquidation preference	$ 1	$ 30,000		$ 30,000
Convertible preferred stock, conversion ratio	2,040.8163
Accrued stock issuance costs		2,413
General and administrative		$ 2,102