Fair Value of Financial Instruments - Schedule of Financial Assets and Liabilities Measured at Fair Value On a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Liabilities:
Warrant liability	$ 9	$ 252
Money market funds
Assets:
Cash equivalents - money market funds	1,681	45,006
Fair Value, Recurring
Assets:
Total assets	1,681	45,006
Liabilities:
Derivative liability	56	7,977
Warrant liability	9	252
Total liabilities	65	8,229
Fair Value, Recurring \| Level 1
Assets:
Total assets	1,681	45,006
Liabilities:
Derivative liability	0	0
Warrant liability	0	0
Total liabilities	0	0
Fair Value, Recurring \| Level 2
Assets:
Total assets	0	0
Liabilities:
Derivative liability	0	0
Warrant liability	9	252
Total liabilities	9	252
Fair Value, Recurring \| Level 3
Assets:
Total assets	0	0
Liabilities:
Derivative liability	56	7,977
Warrant liability	0	0
Total liabilities	56	7,977
Fair Value, Recurring \| Money market funds
Assets:
Cash equivalents - money market funds	1,681	45,006
Fair Value, Recurring \| Money market funds \| Level 1
Assets:
Cash equivalents - money market funds	1,681	45,006
Fair Value, Recurring \| Money market funds \| Level 2
Assets:
Cash equivalents - money market funds	0	0
Fair Value, Recurring \| Money market funds \| Level 3
Assets:
Cash equivalents - money market funds	$ 0	$ 0

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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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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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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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