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Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Sales:    
Total sales, net $ 14,404 $ 10,204
Cost of goods sold 6,623 3,689
Gross profit 7,781 6,515
Research and development 174 44
Sales and marketing 7,798 8,093
General and administrative 7,489 7,240
Goodwill, intangible and other asset impairment 6,737 0
Total operating expenses 22,198 15,377
Operating loss (14,417) (8,862)
Non-cash loss on modification of common stock warrants (1,922) 0
Non-cash gain on changes in fair value of warrant liability 5,446 4,615
Non-cash gain on changes in fair value of contingent liability 561 0
Other expense, net (276) (1,577)
Net loss (10,608) (5,824)
Less: Preferred deemed dividend 0 735
Less: Retained earnings reduction related to preferred stock down round feature triggered 5,657 0
Net loss attributable to common stockholders $ (16,265) $ (6,559)
Net loss per share attributable to common stockholders (basic and diluted) (in dollars per share) $ (10.10) $ (5.26)
Weighted-average shares of common stock outstanding used in computing net loss per share of common stock (basic and diluted) (in shares) 1,610 1,247
Product [Member]    
Sales:    
Total sales, net $ 14,374 $ 10,180
Cost of goods sold   3,689
Product and Service, Other [Member]    
Sales:    
Total sales, net $ 30 $ 24