Derivative Instruments - Designated as hedging, Financial Position (Details) - Cross Currency Interest Rate Contract [Member] - Net Investment Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 0	$ 4,460
Other long-term liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 5,000	$ 0