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Condensed Consolidated Balance Sheets - USD ($)
Mar. 31, 2024
Dec. 31, 2023
Current Assets    
Cash and cash equivalents $ 1,491,000 $ 3,565,000
Accounts receivable 73,000 137,000
Inventories 63,000 44,000
Prepaid expenses and other current assets 327,000 415,000
Total current assets 1,954,000 4,161,000
Property and equipment, net 81,000 70,000
Lease right-of-use assets 171,000 179,000
Intangible assets, net 25,807,000 26,318,000
Other non-current assets 8,000 8,000
TOTAL ASSETS 28,021,000 30,736,000
Current Liabilities    
Accounts payable 543,000 464,000
Accrued expenses 1,640,000 1,733,000
Notes payable 74,000 184,000
Current portion of operating lease liabilities 93,000 91,000
Total current liabilities 2,350,000 2,472,000
Royalties payable 7,060,000 6,974,000
Operating lease liabilities 87,000 97,000
Total liabilities 9,497,000 9,543,000
Stockholders' Equity    
Common stock, $0.0001 par value, 300,000,000 shares authorized; 7,573,403 and 7,026,627 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively 1,000 1,000
Additional paid-in capital 296,907,000 296,901,000
Accumulated deficit (278,384,000) (275,709,000)
Total stockholders' equity 18,524,000 21,193,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY 28,021,000 30,736,000
Series A convertible preferred stocks [Member]    
Stockholders' Equity    
Preferred Stock, $0.0001 par value, 10,000,000 shares authorized Series A Convertible Preferred Stock, $0.0001 par value, 7,203 shares designated; 3,703 and 4,578 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively 0 0
Series x convertible preferred stocks [Member]    
Stockholders' Equity    
Preferred Stock, $0.0001 par value, 10,000,000 shares authorized Series A Convertible Preferred Stock, $0.0001 par value, 7,203 shares designated; 3,703 and 4,578 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively $ 0 $ 0