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Revenue Recognition (Reagent Rental Programs) (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Lease receivable asset $ 7.2
Reagent rental programs  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Estimation of future revenues $ 31.6