Derivatives and Hedge Accounting Derivatives and Hedge Accounting - Effect of Net Investment Hedges on AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Effect of net investment hedges on accumulated other comprehensive loss	$ (580)	$ 0	$ 0
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Effect of net investment hedges on accumulated other comprehensive loss	$ (580)	$ 0