Fair Value Measurements and Derivative Instruments - Balance Sheet Hedging Instruments (Details) - Foreign currency debt - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Derivative Instruments
Carrying value of non-derivative instrument designated as hedging instrument	$ 132,826	$ 263,031
Current portion of debt
Derivative Instruments
Carrying value of non-derivative instrument designated as hedging instrument	0	43,696
Long-term debt
Derivative Instruments
Carrying value of non-derivative instrument designated as hedging instrument	$ 132,826	$ 219,335