Accounting Policies (Schedule of Foreign Currency Transaction Gains and Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Selling, general, and administrative expense	$ (274)	$ 4,127	$ (381)
Other (income)/expense, net	(67)	4,634	(3,532)
Total transaction (gains)/losses	(341)	8,761	(3,913)
Gain on long-term intercompany loans		$ 1,867	$ 3,515

Current period adjustment resulting from gains and losses on intercompany foreign currency transactions that are of a long-term-investment nature because settlement is not planned or anticipated in the foreseeable future. Resulting from the entities to the transaction being consolidated, combined, or accounted for by the equity method in the reporting entity's financial statements.

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