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Property, Plant, and Equipment - Schedule of Property, plant and equipment (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Total property, plant and equipment $ 20,843 $ 19,794
Accumulated depreciation and amortization (15,267) (15,314)
Property, plant and equipment, net 5,576 4,480
Lab and build-to-suit equipment    
Total property, plant and equipment 6,756 6,834
Office equipment    
Total property, plant and equipment 19 19
Furniture and fixtures    
Total property, plant and equipment 241 241
Computer equipment    
Total property, plant and equipment 487 487
Leasehold improvements    
Total property, plant and equipment 11,374 11,409
Construction-in-progress    
Total property, plant and equipment $ 1,966 $ 804