Employee Benefit Plans (Details 3) (Postretirement Benefits Other than Pensions, USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013
Postretirement Benefits Other than Pensions
Effect of a one-percentage-point change in assumed health care cost trend rates
Effect of a 1 percentage-point increase in total of service and interest cost	$ 627
Effect of a 1 percentage-point decrease in total of service and interest cost	(500)
Effect 1 percentage-point increase in postretirement benefit obligation	4,956
Effect of a 1 percentage-point decrease in postretirement benefit obligation	(4,091)
Estimated benefit payments
2014	1,475
2015	1,541
2016	1,652
2017	1,734
2018	1,877
Years 2019-2023	$ 12,134

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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=28361610&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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- Definition

Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ References