Derivative Financial Instruments (Fair Value of Derivative Assets and Liabilities) (Details) - Level 2 - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Foreign Currency Derivatives [Abstract]
Derivative assets - Forward foreign currency exchange contracts	$ 535	$ 943
Derivative assets - Netting of counterparty contracts	(424)	(943)
Derivative assets - Foreign currency forward contract derivatives	111	0
Derivative liabilities - Forward foreign currency exchange contracts	(424)	(2,256)
Derivative liabilities - Netting of counterparty contracts	424	943
Derivative liabilities - Foreign currency forward contract derivatives	$ 0	$ (1,313)

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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