Property and Equipment
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment
6. Property and Equipment.
Property and equipment consisted of the following as of December 31, 2021 and 2020 (in thousands):
 
    
December 31,
2021
     
December 31,
2020
  
Office equipment and computer hardware
    $ 124      $ 99  
Furniture and fixtures
      109        109  
    
 
 
     
 
 
  
Total property and equipment
      233        208  
Less accumulated depreciation
      (168 )       (144 ) 
    
 
 
     
 
 
  
Property and equipment, net
      65        64  
    
 
 
     
 
 
  
Depreciation expense for the years ended December 31, 2021 and 2020 was approximately $25 thousand and $18 thousand, respectively.