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Cash, Cash Equivalents and Restricted Cash
 12 Months Ended
Dec. 31, 2023
Cash and Cash Equivalents [Abstract]  
Cash, Cash Equivalents and Restricted Cash Cash, Cash Equivalents and Restricted Cash
Cash and cash equivalents that are restricted as to withdrawal or use under the terms of certain contractual agreements are recorded in Restricted Cash on the balance sheet. Restricted cash does not include required minimum balances.
 December 31,
2023		December 31,
2022
Cash and cash equivalents$12,646 $7,671 
Restricted balance for loan agreement— 4,000 
Letters of credit— 101 
Security for credit cards50 50 
Total cash, cash equivalents and restricted cash shown in the statement of cash flows$12,696 $11,822 
On March 15, 2023, the Company returned to Avenue the $4.0 million held in restricted cash to pay down a portion of the outstanding Avenue Loan balance. See Note 11 - Loans and Convertible Notes Payable - Term Loan from Avenue Venture Opportunities Fund, L.P. for more information. On March 31, 2023, the letter of credit for the sub-lease agreement for office space at 1633 Broadway, New York, NY expired.