Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 898,000	$ 1,701,000
Marketable investments	1,349,000	2,276,000
Other Receivables	19,000
Prepaid expenses and other current assets	318,000	199,000
Total current assets	2,584,000	4,176,000
Property and equipment, net	98,000	108,000
Right of use asset, net	554,000	618,000
Patent and trademark rights, net	2,267,000	2,594,000
Other assets	745,000	1,112,000
Total assets	6,248,000	8,608,000
Current liabilities:
Accounts payable	6,944,000	6,383,000
Accrued expenses	639,000	606,000
Current portion of operating lease liability	234,000	239,000
Current portion of note payable, net	1,950,000	2,307,000
Total current liabilities	9,767,000	9,535,000
Long-term liabilities:
Operating lease liability	338,000	395,000
Total liabilities	10,105,000	9,930,000
Commitments and contingencies (Notes 13 and 14)
Stockholders’ deficit:
Common Stock, $0.001 par value, authorized shares - 350,000,000; issued and outstanding shares 72,290,030 and 65,526,320 as of March 31, 2025 and December 31, 2024, respectively	72,000	66,000
Additional paid-in capital	426,604,000	425,440,000
Accumulated deficit	(430,533,000)	(426,828,000)
Total stockholders’ deficit	(3,857,000)	(1,322,000)
Total liabilities and stockholders’ deficit	6,248,000	8,608,000
Series A Junior Participating Preferred Stock [Member]
Stockholders’ deficit:
Preferred Stock, value
Series B Convertible Preferred Stock [Member]
Stockholders’ deficit:
Preferred Stock, value

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).