Employee Benefit Plans (Details 9) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
One-Percentage-Point
Effect on total service and interest cost components in 2016, One Percentage Point Increase	$ (3,803)
Effect on total service and interest cost components in 2016, One Percentage Point Decrease	3,182
Effect on postretirement benefit obligation as of December 31, 2016, One Percentage Point Increase	(130,198)
Effect on postretirement benefit obligation as of December 31, 2016, One Percentage Point Decrease	$ 113,429

No definition available.

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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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