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Condensed Consolidated Balance Sheets (Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Current assets    
Cash and cash equivalents $ 14,540 $ 7,671
Restricted cash 50 4,151
Accounts receivable, net 127 366
Inventory 2,480 1,998
Prepaid expenses and other current assets 2,275 1,969
Total current assets 19,472 16,155
Property, plant and equipment, net 1,403 1,422
Right-of-use assets 175 285
Total assets 21,050 17,862
Current liabilities    
Accounts payable 966 2,018
Accrued expenses 5,546 4,685
Lease liabilities, current 92 186
Loan payable, current 4,510 7,846
Total current liabilities 11,114 14,735
Warrant liability 3,780 0
Other liabilities, non-current 1,146 1,144
Loan payable, non-current 411 3,070
Convertible notes payable, non-current 4,841 4,772
Total liabilities 21,292 23,721
Commitments and contingencies (see note 13)
Stockholders’ equity (deficit)    
Preferred stock, $0.01 par value; 10,000,000 shares authorized; 20,981 and 11,357 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively 0 0
Common stock, $0.01 par value; 80,000,000 shares authorized; 15,250,469 shares and 10,046,571 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively 153 100
Additional paid-in capital 473,355 451,608
Accumulated deficit (473,686) (457,484)
Accumulated other comprehensive loss (64) (83)
Total stockholders’ equity (deficit) (242) (5,859)
Total liabilities and stockholders’ equity $ 21,050 $ 17,862