Financial Instruments and Fair Value Measurements - Summary of Cash Equivalents and Conversion Right Liability's Carrying Value and Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets
Money market funds carrying amount	$ 6,000	$ 12,793	$ 639
Cash equivalents carrying amount	6,000	12,793	639
Money market funds	6,000	12,793	639
Total assets	6,000	12,793	639
Liabilities, Fair Value Disclosure [Abstract]
Conversion feature derivative liability			717
Liabilities	2,436	1,764	2,708
Reported Value Measurement [Member]
Liabilities, Fair Value Disclosure [Abstract]
Conversion feature derivative liability			717
Liabilities			717
Conversion feature derivative liability			717
Total liabilities			717
Fair Value, Inputs, Level 1
Assets
Money market funds	6,000	12,793	639
Total assets	$ 6,000	$ 12,793	639
Fair Value, Inputs, Level 3 \| Reported Value Measurement [Member]
Liabilities, Fair Value Disclosure [Abstract]
Conversion feature derivative liability			717
Total liabilities			$ 717

Conversion feature derivative liability, current.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Fair value of financial and nonfinancial obligations.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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