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Condensed Consolidated Balance Sheets (Unaudited) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 25,713 $ 35,413
Prepaid expenses and other current assets 1,423 1,384
Total current assets 27,136 36,797
Fixed assets, net 2,962 3,206
Lease right of use assets 751 816
Restricted cash 266 266
Other assets 102 116
Total assets 31,217 41,201
Current liabilities:    
Accounts payable 472 422
Accrued expenses 2,772 4,356
Current portion of term loan payable to a bank 9,767 8,893
Current portion of lease liability 526 513
Total current liabilities 13,537 14,184
Term loan payable to a bank 9,174 11,632
Other long-term debt 781 751
Lease liability, net of current portion 837 973
Warrant liability 909 916
Total liabilities 25,238 28,456
Commitments and contingencies (Note 14)
Stockholders' equity    
Preferred stock, $0.01 par value; 10,000,000 shares authorized at March 31, 2024 and December 31, 2023; no shares issued or outstanding at March 31, 2024 and December 31, 2023, respectively.
Common stock, $0.01 par value; 150,000,000 shares authorized at March 31, 2024 and December 31, 2023; 29,470,076 and 29,213,627 shares issued at March 31, 2024 and December 31, 2023, respectively; 29,347,468 and 29,091,019 shares outstanding at March 31, 2024 and December 31, 2023, respectively.. 292 290
Treasury stock (at cost) (448) (448)
Additional paid-in capital 151,384 149,931
Accumulated deficit (145,249) (137,028)
Total stockholders' equity 5,979 12,745
Total liabilities and stockholders' equity $ 31,217 $ 41,201