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Income Taxes Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions	$ (7,248)
Unrecognized Tax Benefits [Roll Forward]
Beginning balance at January 1	8,590	$ 8,250
Increase (decrease) related to current year's tax position		1,652
Lapse of statute of limitations	(333)	(1,367)
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation	(51)
Foreign exchange adjustment, increase		55
Ending balance at December 31	$ 958	$ 8,590

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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