Fair Value Measurements Fair Value Measurements - Quantitative Information about Level 3 Fair Value Measurement (Details) - Valuation Technique, Discounted Cash Flow - Level 3	9 Months Ended
	Sep. 30, 2020
Secured Term Loan
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value Inputs, Effective Rate	2.08%
Term Loan Facility | Minimum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value Inputs, Effective Rate	1.88%
Term Loan Facility | Maximum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value Inputs, Effective Rate	1.91%
Convertible Senior Notes
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value Inputs, Effective Rate	1.88%