Financial Instruments and Fair Value Measurements - Notional Principal Amounts of Outstanding Derivative Instruments (Details) - USD ($)		6 Months Ended
		Jun. 30, 2020	Dec. 31, 2019
Derivatives Fair Value [Line Items]
Derivative instruments not designated as hedging instruments, description of terms		We use forward contracts to reduce the effects of foreign currency exchange rate fluctuations on our cash flows. For the three and six months ended June 30, 2020 and 2019, respectively, our forward contracts have not been designated as hedges and generally had maturities of less than 90 days.
Not Designated as Hedging Instrument | Foreign Exchange-forward Contracts
Derivatives Fair Value [Line Items]
Foreign currency exchange - forward contracts	[1],[2]		$ 10,000,000

[1] Derivative contracts address foreign currency exchange fluctuations for the Euro versus the U.S. dollar. The Company had no outstanding derivative contracts as of June 30, 2020 and one outstanding derivative contract as of December 31, 2019. These outstanding derivatives are not designated as hedging instruments and have an original maturity period of 90 days or less.

[2] The fair value of our outstanding derivative as of December 31, 2019 was not material.