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Fair Value Measurements - Level 3 Financial Instruments (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Acquisition-related Contingent Consideration    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance $ 922 $ 1,828
Change in fair value (299) (362)
Ending Balance 623 1,466
Put Option Liability (Madryn)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 3,072 4,768
Change in fair value 437 (2,608)
Ending Balance $ 3,509 $ 2,160