Environmental Costs (Schedule of Change in Environmental Remediation) (Details) - Accruals and Payable and Other Long Term Liabilities - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Accrual for Environmental Loss Contingencies [Roll Forward]
Balance at January 1	$ 5,531	$ 6,057
Additions to accrual	1,122	0
Payments	(569)	(944)
Changes in foreign currency exchange rates	(6)	418
Balance at December 31	$ 6,078	$ 5,531

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Amount of expense for newly incurred environmental loss contingencies. Includes, but is not limited to, remediation expense and interest accretion.

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Amount of foreign currency translation gain (loss) which decreases (increases) the accrual for environmental loss contingencies.

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Amount of cash outflow to settle environmental loss contingencies.

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