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Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
ASSETS    
Cash and cash equivalents $ 1,823 $ 2,924
Accounts receivable, net of allowance for credit losses ($3 at March 31, 2024 and December 31, 2023) 734 680
Inventory, net of allowance for excess and obsolete inventory and lower of cost or estimated net realizable value adjustments ($229 and $264 at March 31, 2024 and December 31, 2023, respectively) 663 564
Prepaid expenses and other current assets 371 256
Current assets, discontinued operations 0 2,730
Total current assets 3,591 7,154
Operating lease right-of-use assets 1,212 1,296
Property and equipment, net 77 87
Other assets 477 478
Other assets, discontinued operations 0 19
TOTAL ASSETS 5,357 9,034
LIABILITIES AND STOCKHOLDERS’ EQUITY    
Accounts payable 1,117 906
Accrued liabilities 1,266 1,169
Secured Convertible Notes, net of discounts 973 1,137
Unsecured Convertible Notes, net of discounts 34 0
Embedded derivative liability 159 0
Operating lease liability 375 368
Current liabilities, discontinued operations 0 698
Total current liabilities 3,924 4,278
Warrant liabilities 232 334
Operating lease liabilities-non-current 1,041 1,108
Total liabilities 5,197 5,720
Commitments and contingencies (Note 8)
Stockholders’ equity:    
Common stock, $0.01 par value; 150,000 shares authorized, 32,025 and 11,230 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively 320 112
Additional paid-in capital 176,798 176,101
Accumulated deficit (178,443) (174,849)
Total stockholders’ equity 160 3,314
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY 5,357 9,034
Series B Preferred Stock [Member]    
Stockholders’ equity:    
Preferred Stock 44 275
Series C Preferred Stock [Member]    
Stockholders’ equity:    
Preferred Stock $ 1,441 $ 1,675