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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Mar. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Revenue contract costs recognized when incurred $ 0.8 $ 1.3 $ 3.9 $ 2.0  
K I T S          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Revenue recognized 4.1 $ 4.0 8.6 $ 8.5  
Research Services          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Revenue recognized 10.7   22.1    
Remaining performance obligations 39.9   39.9    
Deferred revenue for customer services 35.2   35.2   $ 31.9
Contract with customer liability related party amount 33.9   33.9    
Contract with customer liability revenue recognized related party amount $ 10.0   $ 21.2    
Research Services | Minimum [Member]          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Remaining performance obligation, remaining duration 1 year   1 year    
Research Services | Maximum [Member]          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Remaining performance obligation, remaining duration 2 years   2 years    
Consumer services          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Revenue recognized $ 6.4   $ 32.0    
Deferred revenue for customer services $ 32.5   $ 32.5   $ 39.3
Supplier Concentration Risk | Revenue Benchmark [Member] | Microarrays          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Percentage of Revenue 100.00% 100.00% 100.00% 100.00%  
Supplier Concentration Risk | Revenue Benchmark [Member] | K I T S          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Percentage of Revenue 100.00% 100.00% 100.00% 100.00%  
Supplier Concentration Risk | Revenue Benchmark [Member] | Laboratory Services          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Percentage of Revenue 100.00% 100.00% 100.00% 100.00%