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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 following table summarizes our major classes of property and equipment (in thousands): 
 December 31,
 20212020
Laboratory equipment$4,215 $4,967 
Computer equipment and software265 281 
Furniture and fixtures— — 
Leasehold improvements115 83 
4,595 5,331 
Less accumulated depreciation and amortization(4,314)(4,859)
Property and equipment, net$281 $472 
Depreciation and amortization of property and equipment of $0.4 million and $0.5 million was recorded for the years ended December 31, 2021 and 2020, respectively.