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Commitments and Contingencies - Narrative (Details)
$ in Millions
1 Months Ended
Jun. 16, 2015
LegalMatter
Mar. 31, 2019
USD ($)
Loss Contingencies [Line Items]    
Number of class actions filed (in legal matters) | LegalMatter 3  
Number of class actions dismissed (in legal matters) | LegalMatter 2  
Fees To Former European Distributor | Minimum    
Loss Contingencies [Line Items]    
Commitment due in next twelve months   $ 10.0
Accrued liabilities   6.4
Fees To Former European Distributor | Maximum    
Loss Contingencies [Line Items]    
Commitment due in next twelve months   $ 55.0