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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Current assets:    
Cash $ 7,575 $ 11,446
Other receivables 425 951
Prepaid expenses and other current assets 1,599 1,284
Total current assets 9,599 13,681
Restricted cash 4,095 4,095
Property and equipment, net 493 236
Right-of-use assets - operating leases 32,781 1,030
Goodwill 2,044 2,044
Investment in non-controlling interest 0 59
Other assets 120 1,134
Total assets 49,132 22,279
Current liabilities:    
Accounts payable 1,067 1,620
Accrued expenses 1,893 3,626
Income taxes payable 2 0
Operating lease liabilities, current 2,216 295
Deferred revenue, current 190 0
Total current liabilities 6,573 7,654
Convertible notes, net 6,773 0
Warrant liabilities 116 331
Operating lease liabilities, non-current 32,854 887
Deferred revenue, non-current 392 0
Contingent consideration liability 107 0
Total liabilities 46,899 10,172
Stockholder's equity:    
Common stock, $0.005 par value, 100,000 shares authorized at December 31, 2023 and 2022; 5,410 and 5,127 issued and outstanding at December 31, 2023 and 2022, respectively 27 26
Additional paid-in capital 189,186 177,377
Accumulated deficit (186,981) (165,297)
Total stockholders' equity 2,233 12,107
Total liabilities and stockholders' equity 49,132 22,279
Related Party [Member]    
Current liabilities:    
Other current liabilities 1,205 1,750
Other liabilities 0 1,206
Nonrelated Party [Member]    
Current liabilities:    
Other current liabilities 0 363
Other liabilities 84 94
Series A Preferred Stock [Member]    
Stockholder's equity:    
Preferred stock, $0.005 par value, 1,000 shares authorized, 156 designated and outstanding of Series A convertible preferred stock at December 31, 2023 and 2022, $156 liquidation preference $ 1 $ 1