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Accrued Expenses and Other Current Liabilities (Tables)
 12 Months Ended
Dec. 31, 2021
Accrued Expenses and Other Current Liabilities [Abstract]  
Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consist of the following (in thousands):

  December 31,  
    2021
     2020  
Warranty obligations
  
$
59
    
$
87
  
Compensation and related benefits
    
2,052
      
891
  
State sales, use and other taxes
    
3,697
      
3,105
  
Professional fees and other
    
569
      
607
  

 
$
6,377
    
$
4,690