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Commitments and Contingencies - Narrative (Details)
9 Months Ended
Sep. 30, 2020
Loss Contingencies [Line Items]  
Percentage of royalty obligations, majority are less than 3.00%
Minimum  
Loss Contingencies [Line Items]  
Percentage of royalty obligations 0.50%
Maximum  
Loss Contingencies [Line Items]  
Percentage of royalty obligations 5.00%