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Stockholders' Equity (Narrative) (Details)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
May 25, 2022
shares
Nov. 22, 2021
shares
Sep. 20, 2021
item
shares
Apr. 18, 2021
shares
Feb. 28, 2022
shares
Sep. 30, 2022
USD ($)
shares
Sep. 30, 2022
USD ($)
shares
Sep. 30, 2021
shares
Dec. 02, 2020
shares
Aug. 04, 2020
shares
Stockholders' Equity [Line Items]                    
Dividend yield             0.00%      
Omniome Plan [Member]                    
Stockholders' Equity [Line Items]                    
Exchange ratio | item     0.259204639              
Shares authorized     2,494,128              
ESPP [Member]                    
Stockholders' Equity [Line Items]                    
Shares issued             1,878,168 1,913,968    
Additional common stock reserved for issuance         4,000,000.0          
Common stock remain available for issuance           9,932,505 9,932,505      
Stock-based compensation expense | $           $ 2.3 $ 7.9      
2020 Equity Incentive Plan [Member]                    
Stockholders' Equity [Line Items]                    
Shares authorized                   11,000,000
Additional common stock reserved for issuance 18,000,000                  
Common stock remain available for issuance           18,700,000 18,700,000      
2020 Inducement Equity Incentive Plan [Member]                    
Stockholders' Equity [Line Items]                    
Shares authorized                 2,500,000  
Additional common stock reserved for issuance   360,000   750,000            
Time-based and performance-based options [Member]                    
Stockholders' Equity [Line Items]                    
Stock-based compensation expense | $           $ 6.4 $ 20.9      
RSUs with performance-based vesting [Member]                    
Stockholders' Equity [Line Items]                    
Stock-based compensation expense | $           $ 10.3 $ 31.9