Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of deferred tax assets

	As of December 31,
	2022			2021
Deferred tax assets:
Net operating losses	$	151,433		$	143,732
Research and other credits		2,178			2,178
Stock based compensation		4,087			3,354
In-Process research and development		511			1,132
Capitalized research and development costs		12,686			-
Other		468			230
Total deferred tax assets		171,363			150,626
Valuation allowance		(171,363	)		(150,626	)
Net deferred tax assets	$	-		$	-

Schedule of statutory tax rates and the effective tax rates

	Year Ended December 31,
	2022			2021
Statutory rate		21.0	%		21.0	%
Valuation allowance		(29.8	)%		(28.5	)%
Nondeductible stock compensation		1.9	%		0.4	%
Other		6.9	%		7.1	%
Effective tax rate		-	%		-	%

Schedule of unrecognized tax benefits

Balance at December 31, 2020	$	1,060
Additions based on tax positions related to prior year		-
Additions based on tax positions related to current year		-
Balance at December 31, 2021		1,060
Additions based on tax positions related to prior year		-
Additions based on tax positions related to current year		-
Balance at December 31, 2022	$	1,060