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Balance Sheet Components (Narrative) (Details)
 1 Months Ended 3 Months Ended 6 Months Ended
Sep. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Oct. 31, 2015
USD ($)
Balance Sheet Components [Line Items]          
Percentage of fee to prepay debt     4    
Short-term restricted cash   $ 300,000 $ 300,000 $ 500,000  
Long-term restricted cash   2,922,000 2,922,000 4,592,000  
May 1 annual decrease to long-term restricted cash     500,000    
Goodwill impairment   0      
Deferred revenue, current   32,084,000 32,084,000 10,977,000  
Deferred revenue, non-current   1,827,000 1,827,000 25,049,000  
Revenue recognized     $ 9,200,000    
Deferred service revenue, noncurrent, recognition period     5 years    
Prepaid expenses and other current assets   7,657,000 $ 7,657,000 7,394,000  
Omniome, Inc [Member]          
Balance Sheet Components [Line Items]          
Long-term restricted cash $ 1,600,000 0 0 1,600,000  
Short term debt acquired 1,300,000        
Long-term debt acquired $ 3,000,000.0        
Debt Instrument, Term 43 months        
Debt Instrument Interest Rate Stated Percentage 17.00%        
Omniome, Inc [Member] | In Process Research and Development [Member]          
Balance Sheet Components [Line Items]          
Indefinite-lived Intangible Assets (Excluding Goodwill) $ 400,000,000        
Security Deposit [Member]          
Balance Sheet Components [Line Items]          
Short-term restricted cash   300,000 300,000 500,000  
O’Brien Lease Agreement [Member]          
Balance Sheet Components [Line Items]          
Long-term restricted cash   2,500,000 2,500,000 $ 3,000,000.0 $ 4,500,000
Additional long-term restricted cash     400,000    
Service [Member]          
Balance Sheet Components [Line Items]          
Deferred revenue   33,900,000 33,900,000    
Deferred revenue, current   32,100,000 32,100,000    
Prepaid expenses and other current assets   600,000 600,000    
Service contract [Member]          
Balance Sheet Components [Line Items]          
Deferred revenue, non-current   $ 1,800,000 $ 1,800,000