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Property and Equipment, net
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment, net Property and Equipment, net
The principal categories of property and equipment, net at December 31, 2021 and 2020, respectively, are as follows: 
Property and Equipment, net:20212020
Software, office and computer equipment$448 $1,443 
Furniture, fixtures and fittings302 300 
Less - accumulated depreciation(465)(1,384)
Total$285 $359 
Depreciation expense for the years ended December 31, 2021, 2020 and 2019 was $97, $287 and $459, respectively.