Income Taxes (Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Unrecognized tax benefits balance at January 1	$ 19,606	$ 19,509	$ 12,538
Increase in gross amounts of tax positions related to prior years	62	2,315	14,699
Decrease in gross amounts of tax positions related to prior years	(2,129)	(145)	(67)
Increase in gross amounts of tax positions related to current year	585	79	1,077
Decrease due to settlements with tax authorities	(14,029)	(42)	(32)
Decrease due to lapse in statute of limitations	(163)	(90)	(6,775)
Currency translation	251
Currency translation		(2,020)	(1,931)
Unrecognized tax benefits balance at December 31	$ 4,183	$ 19,606	$ 19,509

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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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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