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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Sales:    
Total sales, net $ 2,631 $ 2,339
Cost of goods sold 837 739
Gross profit 1,794 1,600
Operating expenses    
Research and development 19 10
Sales and marketing 1,055 1,236
General and administrative 2,291 1,699
Loss on divestiture of subsidiary 865 0
Total operating expenses 4,230 2,945
Operating loss (2,436) (1,345)
Non-cash gain on changes in fair value of warrant liabilities 194 0
Non-cash gain on change in fair value of embedded derivative liability 65 0
Accretion of interest and amortization of discounts on convertible notes (433) 0
Other expense, net (480) 0
Net loss from continuing operations (3,090) (1,345)
Net loss from discontinued operations (Note 17) (124) (394)
Net loss (3,214) (1,739)
Less: Increase to accumulated deficit due to adjustment to Preferred Stock conversion price 380 0
Net loss attributable to common stockholders $ (3,594) $ (1,739)
Basic and diluted net loss per share    
Net loss per share from continuing operations (in dollars per share) $ (0.14) $ (0.66)
Net loss per share from discontinued operations (in dollars per share) (0.01) (0.19)
Net loss per share attributable to common stockholders (basic and diluted) (in dollars per share) $ (0.15) $ (0.85)
Weighted-average shares of common stock outstanding used in computing net loss per share of common stock (basic and diluted) (in shares) 24,672 2,035
Product [Member]    
Sales:    
Total sales, net $ 2,624 $ 2,332
Product and Service, Other [Member]    
Sales:    
Total sales, net $ 7 $ 7