Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Stock-Based Compensation [Abstract]

Schedule of restricted stock unit activity

	Restricted Stock Units			Weighted Average Grant Date Fair Value
Non-vested as of December 31, 2022		196,838		$	12.49
Granted		165,100			3.02
Forfeited		(3,933	)		4.73
Vested		(61,444	)		16.19
Non-vested as of March 31, 2023		296,561		$	6.55

Schedule of stock option activities

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2022		1,828,329		$	14.23		8.16	$	-
Granted		1,162,900			3.06		-		-
Exercised		-			-		-		-
Forfeited		(13,047	)		7.36		-		-
Expired		(4,651	)		16.03		-		-
Outstanding as of March 31, 2023		2,973,531		$	9.89		8.69	$	100
Vested and expected to vest at March 31, 2023		2,973,531		$	9.89		8.69	$	100
Exercisable as of March 31, 2023		987,679			16.58		7.58		-

Schedule of total stock-based compensation costs

	For the Three Months Ended March 31,
	2023		2022
Restricted stock units	$	314	$	314
Stock options		1,261		1,565
Total	$	1,575	$	1,879

Schedule of stock-based compensation expense

	For the Three Months Ended March 31,
	2023		2022
Research and development	$	400	$	366
General and administrative		1,175		1,513
Total	$	1,575	$	1,879