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Condensed Consolidated Balance Sheets (Unaudited) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 10,611 $ 20,644
Short-term investments 5,089 0
Accounts receivable and other receivables, net of allowance for doubtful accounts of $0 and $3 as of September 30, 2023 and December 31, 2022, respectively 304 1,221
Inventories, net — current 2,657 2,321
Assets held for sale 87 87
Prepaid expenses and other current assets 1,093 795
Current assets of discontinued operations 165 330
Total current assets 20,006 25,398
Property and equipment, net 468 680
Right of use asset 1,147 1,848
Inventories, net — noncurrent 1,624 767
Intangible assets, net 40 40
Other noncurrent assets 181 165
Noncurrent assets of discontinued operations 0 24
Total assets 23,466 28,922
Current liabilities:    
Accounts payable and accrued expenses 2,602 2,855
Operating lease liability — current 924 1,010
Current liabilities of discontinued operations 31 26
Total current liabilities 3,885 4,209
Operating lease liability — noncurrent 347 1,007
Common stock warrant and option liabilities 1,836 806
Other noncurrent liabilities 2,000 2,000
Total liabilities 8,068 8,022
Commitments and contingencies (Note 13)
Stockholders’ equity:    
Common stock, $0.001 par value - 150,000,000 shares authorized as of September 30, 2023 and December 31, 2022; 1,110,337 and 616,079 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively 65 65
Additional paid-in capital 284,371 278,827
Accumulated other comprehensive income 87 0
Accumulated deficit (268,987) (257,859)
Total stockholders' equity 15,536 21,033
Non-controlling interest (138) (133)
Total stockholders' equity 15,398 20,900
Total liabilities and stockholders’ equity 23,466 28,922
Related Party [Member]    
Current liabilities:    
Other current liabilities 46 48
Nonrelated Party [Member]    
Current liabilities:    
Other current liabilities $ 282 $ 270