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Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities measured at fair value on a recurring basis

		December 31, 2022
		Fair Value				Level 1				Level 2				Level 3
Assets:
Money market funds (1)		$	73			$	—			$	—			$	—
Corporate notes and commercial paper		$	1,078			$	—			$	1,078			$	—
Liabilities:
Warrant liability		$	2,079			$	—			$	—			$	2,079

		December 31, 2021
		Fair Value				Level 1				Level 2				Level 3
Money market funds (1)		$	1,159			$	1,159			$	—			$	—
Corporate notes and commercial paper		$	12,195			$	—			$	12,195			$	—

(1) Included in cash and cash equivalents

Schedule of determination of fair value for its financial assets (cash equivalents and investments)

		December 31, 2022
						Unrealized				Unrealized				Fair
		Cost				Gains				Losses				Value
Cash and cash equivalents		$	1,828			$	—			$	—			$	1,828
Short-term investments			1,103				—				(25	)			1,078
		$	2,931			$	—			$	(25	)		$	2,906

		December 31, 2021
						Unrealized				Unrealized				Fair
		Cost				Gains				Losses				Value
Cash and cash equivalents		$	5,893			$	—			$	—			$	5,893
Short-term investments			9,276				—				(9	)			9,267
Long-term investments			2,935				—				(7	)			2,928
		$	18,104			$	—			$	(16	)		$	18,088

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- References

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- Definition

Tabular disclosure of the components of cash, cash equivalents, and investments.

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- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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