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Property and Equipment
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
Property and equipment consisted of the following (in thousands):
December 31,
20232022
Furniture and fixtures$1,384 $1,308 
Office equipment719 633 
Software1,252 1,501 
Laboratory equipment5,559 4,588 
Leasehold improvements10,206 10,137 
Total property and equipment$19,120 $18,167 
Less accumulated depreciation and amortization(11,210)(9,550)
Property and equipment, net$7,910 $8,617 
Depreciation expense for the years ended December 31, 2023, 2022, and 2021 was $1,655, $1,437, and $777, respectively. The Company recorded an impairment loss of $1,548 and contract termination fees of $440 related to the discontinuation of the Birmingham research facilities expansion, which has been recognized in research and development expenses during the year ended December 31, 2023. The Company did not record any impairment losses during the years ended December 31, 2022 and 2021.