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Supplemental Financial Information - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Nov. 30, 2023
Jan. 31, 2023
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2018
Property, Plant and Equipment [Line Items]          
Depreciation     $ 4,000,000 $ 3,600,000  
Impairment of leasehold improvements     0 1,200,000  
Purchases of property and equipment     6,653,000 5,175,000  
Notes payable          
Property, Plant and Equipment [Line Items]          
Proceeds from issuance of long-term debt   $ 1,900,000      
Debt instrument, term   3 years      
Debt instrument, interest rate (as percent)   7.00%      
Notes payable     616,000    
Notes payable | Station 41 lease          
Property, Plant and Equipment [Line Items]          
Proceeds from issuance of long-term debt         $ 992,000
Debt instrument, term         10 years
Debt instrument, interest rate (as percent)         8.00%
Notes payable     510,000    
BioHive Supercomputer          
Property, Plant and Equipment [Line Items]          
Purchases of property and equipment       $ 1,700,000  
Other Current Assets          
Property, Plant and Equipment [Line Items]          
License agreement, prepaid expenses     $ 16,000,000    
Tempus Labs, Inc          
Property, Plant and Equipment [Line Items]          
License agreement, term 5 years        
License agreement, trading period 7 days        
Tempus Labs, Inc | Minimum          
Property, Plant and Equipment [Line Items]          
Annual payments $ 22,000,000        
Tempus Labs, Inc | Maximum          
Property, Plant and Equipment [Line Items]          
Annual payments 42,000,000        
Aggregate amount payable in cash or equity $ 160,000,000