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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
Property and equipment consist of the following:
Year ended December 31,
20212020
Equipment$581 $766 
Furniture and fixtures43 43 
Leasehold improvements1,420 1,414 
Software14 22 
Total property and equipment, at cost2,058 2,245 
Less: accumulated depreciation and amortization(1,168)(1,324)
Property and equipment, net$890 $921 
Depreciation and amortization expense for the years ended December 31, 2021 and December 31, 2020, was $220 and $182, respectively.