Financial Instruments and Fair Value Measurements - Schedule of Recurring Fair Value Measurements of Hedge Derivative Asset and Embedded Conversion Derivative Liability (Details) - Level 3 [Member] - 2023 Hedge Derivative Asset and 2023 Notes Embedded Conversion Derivative Liability [Member] - Fair Value, Recurring [Member]	6 Months Ended
	Jun. 30, 2020
Expected Term (Years)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Expected term (years)	2 years 10 months 24 days
Risk Free Interest Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Weighted average measurement input	0.002
Volatility [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Weighted average measurement input	0.42