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Property, Equipment and Software
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Equipment and Software Property, Equipment and Software
Property, equipment and software consists of the following (in thousands):
December 31,
20222021
Computer equipment$3,489 $2,890 
Software9,604 9,453 
Furniture and office equipment713 713 
Motor vehicles50 50 
Lab equipment46,474 45,693 
Leasehold improvements52,974 51,056 
Construction in progress356 630 
Property, equipment and software113,660 110,485 
Less accumulated depreciation and amortization(84,085)(72,809)
Property, equipment and software, net$29,575 $37,676 

Depreciation and amortization expense related to property, equipment and software for the years ended December 31, 2022, 2021 and 2020 was $11.9 million, $11.3 million and $12.0 million, respectively.