Fair Value Measurement - Fair Value Measurement Inputs (Details) - Level 3	Sep. 30, 2020	Dec. 31, 2019
Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liabilities, measurement input	0.750	0.500
Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liabilities, measurement input	0.129	0.165
Risk-free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liabilities, measurement input	0.001	0.015
Cost of debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liabilities, measurement input	0.045	0.053