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Balance Sheets Details
 6 Months Ended
Jun. 30, 2020
Balance Sheets Details [Abstract]  
Balance Sheets Details Balance Sheets Details
Inventories
Inventories consisted of the following (in thousands):
June 30, 2020December 31, 2019
Raw materials$77  $7  
Work-in-process28  26  
Finished goods581  338  
    Inventories$686  $371  

Property and Equipment, net
Property and equipment, net consisted of the following (in thousands):
June 30, 2020December 31, 2019
Laboratory equipment$24,717  $23,561  
Leasehold improvements10,774  10,804  
Computer equipment and software3,135  3,016  
Office equipment and furniture1,115  1,461  
Construction in progress648  691  
Property and equipment40,389  39,533  
       Less: accumulated depreciation and amortization(33,567) (33,251) 
     Property and equipment, net$6,822  $6,282  
Goodwill
Goodwill had a carrying value of approximately $3.2 million as of June 30, 2020 and December 31, 2019.
Other Accrued Liabilities
Other accrued liabilities consisted of the following (in thousands):
June 30, 2020December 31, 2019
Accrued purchases $3,669  $4,386  
Accrued professional and outside service fees2,949  1,802  
Other325  352  
     Total$6,943  $6,540