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Balance Sheets Details (Tables)
 6 Months Ended
Jun. 30, 2024
Balance Sheets Details [Abstract]  
Schedule of Inventory Components
Inventories consisted of the following (in thousands):
June 30, 2024December 31, 2023
Raw materials$108 $108 
Work-in-process6 7 
Finished goods2,118 2,570 
Total Inventories$2,232 $2,685 
Schedule of Property and Equipment, Net
Property and equipment, net consisted of the following (in thousands):
June 30, 2024December 31, 2023
Laboratory equipment$36,547 $37,216 
Leasehold improvements11,960 11,912 
Computer equipment and software2,651 2,565 
Office equipment and furniture1,116 1,469 
Construction in progress1,513 1,636 
Property and equipment53,787 54,798 
Less: accumulated depreciation and amortization(39,821)(39,311)
Property and equipment, net
$13,966 $15,487 
Depreciation expense included in both research and development expenses and selling, general and administrative expenses in the unaudited condensed consolidated statements of operations was as follows (in thousands):
Three Months Ended June 30,Six Months Ended June 30,
2024202320242023
Research and development$1,020 $1,242 $2,052 $2,486 
Selling, general and administrative219 238 439 460 
Total depreciation expense$1,239 $1,480 $2,491 $2,946 
Schedule of Other Accrued Liabilities
Other accrued liabilities consisted of the following (in thousands):
June 30, 2024December 31, 2023
Accrued professional and outside service fees$2,766 $2,330 
Accrued purchases 2,252 1,402 
Other399 1,003 
Total other accrued liabilities$5,417 $4,735