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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Current assets    
Cash and cash equivalents $ 56,271 $ 65,221
Accounts receivable, net 812 71
Inventory 2,680 1,991
Prepaid expenses 2,775 2,782
Other current assets 1,643 2,078
Total current assets 64,181 72,143
Property and equipment, net 629 784
Operating lease right-of-use assets 538 688
Other assets 87 87
Total assets 65,435 73,702
Current liabilities    
Accounts payable 13,256 13,654
Accrued expenses 13,485 12,424
Accrued interest 79 736
Total current liabilities 27,288 27,267
Long-term portion of operating lease liabilities 256 440
Derivative liabilities 9,186 1,905
Long-term debt 103,006 100,598
Total liabilities 139,736 130,210
Commitments and contingencies (Note 16)
Stockholders' (deficit) equity    
Preferred stock, $0.001 par value, 10,000 shares authorized; no shares issued and outstanding as of June 30, 2024 and December 31, 2023
Common stock, $0.001 par value, 100,000 shares authorized as of June 30, 2024 and December 31, 2023; 33,632 and 29,930 shares issued and outstanding as of June 30, 2024 and December 31, 2023, respectively 40 30
Additional paid-in-capital 551,347 534,060
Accumulated deficit (625,688) (590,598)
Total stockholders' (deficit) equity (74,301) (56,508)
Total liabilities and stockholders' (deficit) equity 65,435 73,702
Related Party    
Current liabilities    
Other current liabilities 107 107
Nonrelated Party    
Current liabilities    
Other current liabilities $ 361 $ 346