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Acquisitions - Agilis Consideration (Details) - USD ($)
$ in Thousands
Aug. 23, 2018
Dec. 31, 2020
Acquisitions    
Estimated fair value of deferred consideration payable   $ 0
Agilis    
Acquisitions    
Cash consideration $ 49,221  
Fair value of PTC common stock issued 155,860  
Estimated fair value of deferred consideration payable 38,100  
Estimated fair value of contingent consideration payable 290,500  
Total consideration $ 533,681