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Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2022

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 September 30,								For the Nine Months Ended September 30,
		2022				2021				2022				2021
Research and development		$	873			$	872			$	2,677			$	2,342
General and administrative			1,312				1,171				4,002				3,509
Total stock-based compensation		$	2,185			$	2,043			$	6,679			$	5,851

Common Stock Warrants [Member]

Class Of Stock [Line Items]

Schedule of Warrant Activity

As of September 30, 2022, there were 1,145,631 warrants exercisable into common stock (after 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, 2021			9,581				319,064				9,177				509,117				298,692				1,145,631
Issued			—				—				—				—				—				—
Exercised			—				—				—				—				—				—
Cancelled/Expired			—				—				—				—				—				—
Balance as of September 30, 2022			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 September 30, 2022, there were 50,207.419 warrants exercisable into Series X1 Preferred Stock, which are convertible into 2,789,301 shares of common stock (after 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, 2021			50,207.419
Assumed and replaced			—
Exercised			—
Cancelled/Expired			—
Balance as of September 30, 2022			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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