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Property and equipment
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property and equipment
3.Property and equipment:

 

Property and equipment, net at December 31, consists of the following:

 

   2021   2020 
Computer equipment and software  $29   $24 
Less accumulated depreciation and amortization   (24)   (19)
   $5   $5