Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Taxes [Abstract]

Components of Net Deferred Tax Assets

The components of the net deferred tax assets are as follows at December 31:

	2023			2022
	(in thousands)
Operating loss carryforwards	$	61,427		$	53,119
Tax credit carryforwards		6,476			3,558
Other temporary differences		10,533			9,168
		78,436			65,845
Less valuation allowance		(78,436	)		(65,845	)
Net deferred tax asset	$	—		$	—

Primary Factors Affecting Income Tax Rates

The primary factors affecting the Company’s income tax rates were as follows:

	2023			2022
Tax benefit at U.S. statutory rates		(21	%)		(21	%)
State tax benefit		(3.4	%)		4.2	%
Permanent differences		0.9	%		0.5	%
Other		2.3	%		(1.4	%)
Changes in valuation allowance		21.2	%		17.7	%
		0	%		0	%