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Derivative Instruments and Hedging Activities - Hedge of Net Investment (Details) - Net Investment Hedges
€ in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
Mar. 31, 2020
EUR (€)
Mar. 31, 2020
USD ($)
Mar. 31, 2019
EUR (€)
Derivative [Line Items]          
Cumulative net gains       $ 5,388  
Euro Notes | Designated as Hedging Instrument          
Derivative [Line Items]          
Hedged notes | €     € 300,000   € 271,146
Foreign exchange gains (losses) $ 6,453 $ 6,141      
Cumulative net gains       $ 26,714