Derivatives (Schedule Of Cash Flow Hedges) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Effective Portion of Derivative	$ 53	$ (298)
Pretax Loss Recognized in Earnings on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Loss	(36)	(563)
Cost of Revenues [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Effective Portion of Derivative	32	(185)
Pretax Loss Recognized in Earnings on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Loss	(27)	(352)
Research and Development [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Effective Portion of Derivative	14	(71)
Pretax Loss Recognized in Earnings on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Loss	(6)	(118)
Selling, General and Administrative [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Effective Portion of Derivative	7	(42)
Pretax Loss Recognized in Earnings on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Loss	$ (3)	$ (93)

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- Definition

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

+ References

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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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

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