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Cash, Cash Equivalents and Restricted Cash (Tables)
3 Months Ended
Mar. 31, 2022
Cash and Cash Equivalents [Abstract]  
Schedule of Cash, Cash Equivalents, and Restricted Cash
Cash, cash equivalents, and restricted cash balances were as follows (in thousands):
 
 
  
March 31,
2022
 
  
December 31,
2021
 
Cash and cash equivalents
   $ 16,340      $ 22,802  
Restricted balance for loan agreement
     4,000      $ 4,000  
Letters of credit
     101        101  
Security for credit cards
     50        50  
    
 
 
    
 
 
 
Total cash, cash equivalents and restricted cash shown in the statements of cash flows
   $ 20,491      $ 26,953