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Segment And Geographic Information (Summary of Revenue by Category) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue $ 130,513,000 $ 78,893,000 $ 90,891,000
Product [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 113,505,000 65,424,000 77,742,000
Instrument [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 61,324,000 34,282,000 45,126,000
Consumable [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 52,181,000 31,142,000 32,616,000
Service and Other [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue $ 17,008,000 $ 13,469,000 $ 13,149,000