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Acquisition Of Ascyrus (Purchase Price Allocation) (Details) - USD ($)
$ in Thousands
Sep. 02, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Purchase Price Allocation        
Goodwill   $ 260,061 $ 186,697 $ 188,781
Ascyrus Medical LLC [Member]        
Consideration        
Cash paid for acquisition $ 63,136      
Common stock issued 20,000      
Contingent consideration 55,407      
Fair value of total consideration 138,543      
Purchase Price Allocation        
Cash and cash equivalents 4,017      
Intangible assets 72,600      
Net other assets/liabilities acquired (1,431)      
Goodwill 63,357 $ 63,400    
Net assets acquired $ 138,543