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Condensed Consolidated Balance Sheets (Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 13,484 $ 20,644
Short-term investments 5,023 0
Accounts receivable and other receivables, net of allowance for doubtful accounts of $1 and $3 as of June 30, 2023 and December 31, 2022, respectively 630 1,287
Inventories, net — current 3,164 2,571
Assets held for sale 87 87
Prepaid expenses and other current assets 951 809
Total current assets 23,339 25,398
Property and equipment, net 560 704
Right of use asset 1,384 1,848
Inventories, net — noncurrent 1,297 767
Intangible assets, net 40 40
Other noncurrent assets 178 165
Total assets 26,798 28,922
Current liabilities:    
Accounts payable and accrued expenses 2,783 2,881
Operating lease liability — current 993 1,010
Total current liabilities 4,091 4,209
Operating lease liability — noncurrent 532 1,007
Common stock warrant and option liabilities 2,445 806
Other noncurrent liabilities 2,000 2,000
Total liabilities 9,068 8,022
Commitments and contingencies (Note 13)
Stockholders’ equity:    
Common stock, $0.001 par value - 150,000,000 shares authorized as of June 30, 2023 and December 31, 2022; 1,108,432 and 616,079 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively 65 65
Additional paid-in capital 284,202 278,827
Accumulated other comprehensive income 21 0
Accumulated deficit (266,420) (257,859)
Total stockholders' equity 17,868 21,033
Non-controlling interest (138) (133)
Total stockholders' equity 17,730 20,900
Total liabilities and stockholders’ equity 26,798 28,922
Related Party [Member]    
Current liabilities:    
Other current liabilities 33 48
Nonrelated Party [Member]    
Current liabilities:    
Other current liabilities $ 282 $ 270