Financial Instruments (Schedule of Loss Recognized in AOCI and the Amount of Loss Reclassified into Income) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($)
Net Investment Hedging [Member]
Amount of (Loss) Recognized in AOCI	$ (860)
Interest Rate Swap [Member]
Amount of (Loss) Recognized in AOCI	1,709
Amount of Loss Reclassified from AOCI into Income	$ (136)

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624177-113959

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