Mandatory Redeemable Preferred Stock and Stockholders' Deficit - Summary of our Outstanding and Exercisable Warrants and Related Transactions (Details) - Warrant [Member] - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Class Of Warrant Or Right [Line Items]
Warrants, outstanding, beginning balance	103,000
Warrants, outstanding, granted	311,000
Warrants, outstanding, expired	(3,000)
Warrants, outstanding, ending balance	411,000	103,000
Weighted average exercise price, outstanding, beginning balance	$ 76.19
Weighted average exercise price, outstanding, granted	0.20
Weighted average exercise price, outstanding, expired	341.50
Weighted average exercise price, outstanding, ending balance	$ 17.08	$ 76.19
Aggregate intrinsic value, outstanding	$ 2,055
Weighted average remaining contractual life (in years), outstanding	9 years 3 months 18 days	8 years 3 months 18 days
Warrants, exercisable, beginning balance	103,000
Warrants, exercisable, ending balance	286,000	103,000
Weighted average exercise price, exercisable, beginning balance	$ 76.19
Weighted average exercise price, exercisable, ending balance	$ 24.54	$ 76.19
Aggregate intrinsic value, exercisable	$ 2,055
Weighted average remaining contractual life (in years), exercisable	9 years 1 month 6 days	8 years 3 months 18 days