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Property, Equipment and Leasehold Improvements
 6 Months Ended
Jun. 30, 2025
Property, Plant and Equipment [Abstract]  
Property, Equipment and Leasehold Improvements Property, Equipment and Leasehold Improvements
Property, equipment and leasehold improvements consist of the following:
(dollars in millions)June 30,
2025		December 31,
2024
Laboratory equipment$20.8 $20.6 
Leasehold improvements9.0 9.3 
Office equipment3.0 2.7 
Total property, equipment and leasehold improvements32.8 32.6 
Less: accumulated depreciation and amortization(26.7)(25.6)
Property, equipment and leasehold improvements, net$6.1 $7.0 
During the three months ended June 30, 2025 and 2024, the Company recognized depreciation and amortization expense of $0.8 million and $1.2 million, respectively. During the six months ended June 30, 2025 and 2024, the Company recognized depreciation and amortization expense of $1.5 million and $2.4 million, respectively.