Retirement Plans (Schedule of Estimated Future Benefit Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Pension Plan [Member]
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
Estimated future benefit payments - 2014	$ 5,132
Estimated future benefit payments - 2015	5,508
Estimated future benefit payments - 2016	6,101
Estimated future benefit payments - 2017	6,068
Estimated future benefit payments - 2018	6,038
Estimated future benefit payments - 2019-2023	34,127
Estimated future benefit payments - Total	62,974
Postretirement Plan [Member]
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
Estimated future benefit payments - 2014	310
Estimated future benefit payments - 2015	320
Estimated future benefit payments - 2016	330
Estimated future benefit payments - 2017	330
Estimated future benefit payments - 2018	330
Estimated future benefit payments - 2019-2023	1,600
Estimated future benefit payments - Total	$ 3,220

Defined Benefit Plan, Expected Future Benefit Payments, Total

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

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

+ References

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- Definition

Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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