Income Taxes (Tables)

12 Months Ended

Dec. 31, 2024

Income Tax Disclosure [Abstract]

Summary of reconciliation of income taxes computed using the U.S. federal statutory rate

A reconciliation of income taxes computed using the U.S. federal statutory rate to that reflected in operations follows (in thousands):

	Year Ended December 31,
	2024			2023
U.S.	$	(3,060	)	$	(5,181	)
International		3			(82	)
Loss before benefit from income taxes	$	(3,057	)	$	(5,263	)
Income tax benefit using U.S. federal statutory rate	$	(642	)	$	(1,105	)
State income taxes, net of federal benefit		(155	)		(5	)
Non-deductible share-based compensation		22			(9	)
Share-based compensation - shortfalls/(windfalls)		70			1,196
Permanent differences		(4	)		1
Tax credits		(11	)		(500	)
Other		0			17
Change in valuation allowance		720			405
	$	—		$	—

Summary of deferred tax assets (liabilities)

Deferred tax assets (liabilities) consist of the following as of December 31, 2024 and 2023 (in thousands):

	Year Ended December 31,
	2024			2023
Deferred tax assets:
Net operating loss carryforwards	$	53,281		$	48,535
Tax credit carryforwards		10,383			10,388
Share-based compensation		7,122			7,071
Capitalized research and development		12,370			16,440
Accruals and reserves		—			2
Total deferred tax assets	$	83,156		$	82,436
Valuation allowance		(83,156	)		(82,436	)
Net deferred tax assets	$	—		$	—