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Property and Equipment
12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
Property and equipment consist of the following:
December 31,
(in thousands)20222021
Leasehold improvements$24,162 $24,168 
Research equipment16,345 16,663 
Computer equipment4,486 5,720 
Construction in progress4,160 8,229 
Furniture and fixtures2,734 3,163 
Computer software1,106 1,174 
Vehicles66 71 
Land— 3,190 
Gross property and equipment53,059 62,378 
Less accumulated depreciation(22,281)(19,882)
Net property and equipment$30,778 $42,496 
Depreciation expense was $4.8 million and $5.7 million for the years ended December 31, 2022 and 2021, respectively. Additionally, during the year ended December 31, 2022, in connection with the strategic prioritization of its gene therapy portfolio, the Company performed an assessment of its fixed assets. As a result, the Company recognized an impairment charge of $6.6 million.