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Other Long-Term Liabilities
12 Months Ended
Dec. 31, 2021
Other Liabilities, Noncurrent [Abstract]  
Other Long-term Liabilities
(7)
Other Long-term Liabilities
The other long-term liabilities consist of the following (in thousands):
 
    
As of December 31,
 
    
2021
    
2020
 
Customer deposits
   $ 750      $ 850  
Restructuring liability
     49        342  
Other long-term liabilities
     4        44  
    
 
 
    
 
 
 
Total other long-term liabilities
   $ 803      $ 1,236