Income Taxes (Tables)

12 Months Ended

Dec. 31, 2024

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The Company's provision for income taxes from continuing operations for the years ended December 31, 2024 and 2023 was as follows:

	Years Ended December 31,
	2024		2023
	(in thousands)
Current:
Federal	$	—	$	—
State	205		569
Foreign	165		104
Total current	370		673
Deferred:
Federal	—		—
State	—		—
Total deferred	—		—
Total provision for income taxes	$	370	$	673

Schedule of Effective Income Tax Rate Reconciliation

The provision for income taxes differed from the amount computed by applying the federal statutory income tax rate of 21% to loss before income taxes due to the following items for the years ended December 31, 2024 and 2023:

	Years Ended December 31,
	2024		2023
	(in thousands)
Tax benefit at federal statutory rate	$	(11,938)	$	(11,169)
Non-deductible compensation	171		2,342
State tax, net of federal benefit	(95)		(9,393)
Valuation allowance	10,773		17,251
Shortfall of stock compensation deduction	1,288		2,666
Non-taxable warrants	591		(1,613)
Other	(420)		589
Income tax expense	$	370	$	673

Schedule of Deferred Tax Assets and Liabilities

Deferred tax assets and liabilities as of December 31, 2024 and 2023, consisted of the following:

	December 31,
	2024		2023
	(in thousands)
Deferred tax assets:
Net operating loss carryforwards	$	73,482	$	68,374
Sec. 163(j) carryforward	11,603		9,214
Accruals and reserves	1,664		1,841
Deferred revenue	115		194
Capital loss carryforward	3,993		4,004
Section 174 - research expenditures	11,869		7,914
Other deferred tax assets	7,223		6,604
Total deferred tax assets	109,949		98,145
Valuation allowance	(108,162)		(97,388)
Total net deferred tax assets	1,787		757
Deferred tax liabilities
Basis difference in intangibles	(1,233)		(332)
Other deferred tax liabilities	(554)		(425)
Total deferred tax liabilities	(1,787)		(757)
Net deferred tax liabilities	$	—	$	—

Summary of Operating Loss Carryforwards

	Tax Effected		Expiration
	(in thousands)
Federal net operating loss (“NOL”) carryforward	$	8,313	2033-2037
Federal NOL carryforward	54,595		Indefinite
Federal capital loss carryforward	3,993		2025
State NOL carryforwards	10,574		2034-2043

Schedule of Unrecognized Tax Benefits Roll Forward

Below is a tabular reconciliation of the total amounts of unrecognized tax benefits:

	2024		2023
	(in thousands)
Unrecognized tax benefits - January 1	$	9,006	$	9,006
Gross decrease - tax positions in current period	—		—
Gross increase - tax positions in current period	—		—
Unrecognized tax benefits - December 31	$	9,006	$	9,006