Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Schedule of deferred tax assets
	As of December 31,
	2023			2022
Deferred tax assets:
Net operating loss carryforwards	$	53,225		$	57,895
Research credit carryforwards		9,841			10,521
Other, net		1,980			1,968
Total deferred tax assets		65,046			70,384
Deferred tax liabilities:
Other, net		(19	)		(46	)
Total deferred tax liabilities		(19	)		(46	)
Valuation allowance		(65,027	)		(70,338	)
Net deferred tax assets	$	-		$	-

Schedule of effective tax rate
	For the Years Ended December 31,
	2023			2022
Computed at 21%	$	(1,084	)	$	(2,144	)
State taxes		11			(488	)
Change in valuation allowance		(5,310	)		(7,545	)
Other		2			-
Stock based compensation		218			627
Research and development credits		(233	)		3,489
Tax attributes expirations		6,314			6,216
Impact of IRC 162m		83			(159	)
Total	$	1		$	(4	)