Derivatives (Gains (Losses) in Cash Flow Hedge and Net Investment Hedge) (Details) - Derivative instruments designated as hedging instruments - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash Flow Hedging | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Losses recognized in AOCI	$ (1,604)	$ 0	$ 0
Gains reclassified from AOCI to Interest expense	113	0	0
Net investment hedges | Foreign exchange swap contracts
Derivative Instruments, Gain (Loss) [Line Items]
(Losses) gains recognized in AOCI	$ (4,801)	$ (471)	$ 6,072