Employee Benefit Plans (Changes In The Assumed Healthcare Cost Trend) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
Employee Benefit Plans [Abstract]
Effect on total service and interest cost components, Percent Point Increase	$ 541
Effect on total service and interest cost components, Percentage Point Decrease	(419)
Effect on accumulated post-retirement benefit obligation, Percentage Point Increase	6,622
Effect on accumulated post-retirement benefit obligation, Percentage Point Decrease	$ (5,158)

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (m)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

+ Details

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

+ References

+ Details

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

+ Details

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