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Derivative Financial Instruments (Summary Of Derivative Financial Instruments Notional Amounts On Outstanding Positions) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Total notional value	$ 194,582	$ 224,680
Derivative fair value	(1,313)	(406)
Euro
Derivatives, Fair Value [Line Items]
Total notional value	34,959	37,718
Derivative fair value	(92)	(122)
Singapore Dollar
Derivatives, Fair Value [Line Items]
Total notional value	34,584	73,455
Derivative fair value	254	364
Japanese Yen
Derivatives, Fair Value [Line Items]
Total notional value	25,561	30,688
Derivative fair value	(178)	(89)
British Pound Sterling
Derivatives, Fair Value [Line Items]
Total notional value	22,185	13,233
Derivative fair value	183	80
South Korean Won
Derivatives, Fair Value [Line Items]
Total notional value	9,408	15,888
Derivative fair value	63	(134)
Other currencies
Derivatives, Fair Value [Line Items]
Total notional value	67,885	53,698
Derivative fair value	$ (1,543)	$ (505)

X

- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

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X

- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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