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Organization and Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2022
Accounting Policies [Abstract]  
Schedule of components of inventories
           
   As of 
(in thousands)  September 30,
2022
   December 31,
2021
 
Raw materials and supplies  $          394   $227 
Finished goods   66    66 
Total inventories  $460   $293 
Schedule of activity related to our accounts receivable
     
   September 30, 
   2022 
(In thousands)     
Balance at January 1, 2022  $112 
Additions   436 
Deductions   (499)
Balance at September 30, 2022  $49 
Schedule of minimum operating lease payments
     
2022  $32 
2023   130 
2024   66 
Total minimum lease payments (base rent)   228 
Less: imputed interest   (12)
Total operating lease liabilities  $216