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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2023

Class Of Stock [Line Items]

Schedule of Stock-Based Compensation Expense Recognized

Total stock-based compensation expense was recognized in our condensed consolidated statements of operations and comprehensive loss as follows (in thousands):

		For the Three Months Ended March 31,
		2023				2022
Research and development		$	397			$	880
General and administrative			984				1,306
Total stock-based compensation		$	1,381			$	2,186

Common Stock Warrants [Member]

Class Of Stock [Line Items]

Schedule of Warrant Activity

As of March 31, 2023, there were 1,145,631 warrants exercisable into common stock (rounding for fractional shares and subject to beneficial ownership blockers).

		Roll Forward of Warrant Activity
		Registered direct warrants, placement agent				Private placement warrants				Private placement warrants, placement agent				Warrants exchanged for common stock				Warrants exchanged for Series X1 preferred stock				Total
Balance as of December 31, 2022			9,581				319,064				9,177				509,117				298,692				1,145,631
Issued			—				—				—				—				—				—
Exercised			—				—				—				—				—				—
Cancelled/Expired			—				—				—				—				—				—
Balance as of March 31, 2023			9,581				319,064				9,177				509,117				298,692				1,145,631

Preferred Stock Warrants [Member]

Class Of Stock [Line Items]

Schedule of Warrant Activity

As of March 31, 2023, there were 50,207.419 warrants exercisable into Series X1 Preferred Stock, which are convertible into 2,789,301 shares of common stock (rounding for fractional shares and subject to beneficial ownership conversion blockers).

		Roll Forward of Series X1 Convertible Preferred Warrant Activity
		Total
Balance as of December 31, 2022			50,207.419
Assumed and replaced			—
Exercised			—
Cancelled/Expired			—
Balance as of March 31, 2023			50,207.419

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Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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