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Property, Plant and Equipment, Net
 6 Months Ended
Jun. 30, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Property, plant and equipment consist of the following:
June 30,
2023		December 31,
2022
Land and land improvements$164 $164 
Buildings and building improvements2,629 2,592 
Furniture and fixtures508 457 
Equipment18,541 18,006 
Leasehold improvements4,324 4,333 
Breeding stock138 123 
Computer hardware and software4,638 4,562 
Construction and other assets in progress106 531 
31,048 30,768 
Less: Accumulated depreciation and amortization(24,474)(23,439)
Property, plant and equipment, net$6,574 $7,329 
Depreciation expense was $475 and $616 for the three months ended June 30, 2023 and 2022, respectively, and $981 and $1,269 for the six months ended June 30, 2023 and 2022, respectively.