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Balance Sheet Components
 6 Months Ended
Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Balance Sheet Components Balance Sheet Components
Property, Plant and Equipment, Net
Property, plant and equipment, net consist of the following (in thousands):

June 30, 2024
December 31, 2023
Land$31,243 $31,243 
Laboratory equipment3,615 8,291 
Buildings102,433 102,433 
Office and computer equipment621 831 
Leasehold improvements154 1,424 
Manufacturing equipment406 2,017 
Total property, plant and equipment, gross138,472 146,239 
Less: accumulated depreciation(5,342)(7,555)
Total property, plant and equipment, net$133,130 $138,684 
Depreciation expense was $1.0 million and $1.0 million for the three months ended June 30, 2024 and 2023, respectively, and was $2.0 million and $2.8 million for the six months ended June 30, 2024 and 2023, respectively, in the condensed consolidated statements of operations and comprehensive loss.
The Company capitalized interest of nil and $1.3 million during the three months ended June 30, 2024 and 2023, respectively, while during the six months ended June 30, 2024 and 2023, the Company capitalized nil and $2.4 million, respectively, of interest related to qualifying expenditures for construction work-in-progress for its Tarzana manufacturing facility.
Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consist of the following (in thousands):
 
 June 30, 2024December 31, 2023
Accrued compensation and benefits$1,998 $1,026 
Accrued operational expenses1,179 1,412 
Accrued restructuring costs3,211 3,136 
Accrued research, development and clinical trial expenses872 1,833 
Operating lease liabilities, current1,669 1,750 
Other current liabilities143 190 
Total accrued expenses and other current liabilities$9,072 $9,347