Fair Value Measurements - Fair Value of Contingent Consideration Calculated Using Unobservable Inputs (Details) - Cobalt Contingent Consideration	Jun. 30, 2021	Dec. 31, 2020
Discount Rates | Minimum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value contingent consideration measurement input	0.072	0.105
Discount Rates | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value contingent consideration measurement input	0.086	0.108
Discount Rates | Weighted-Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value contingent consideration measurement input	0.077	0.106
Probability of Milestone Achievement | Minimum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value contingent consideration measurement input	0.050	0.025
Probability of Milestone Achievement | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value contingent consideration measurement input	0.650	0.650
Probability of Milestone Achievement | Weighted-Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value contingent consideration measurement input	0.279	0.276