Pension Plans and Other Postretirement Benefits (Details 8) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Defined Benefit Plan [Member]
Future benefit payments
2013	$ 3,971
2014	3,850
2015	3,539
2016	3,234
2017	2,803
2018-2022	13,432
Supplemental Retirement Plans [Member]
Future benefit payments
2013	1,320
2014	1,310
2015	1,300
2016	1,291
2017	1,276
2018-2022	6,071
Other Postretirement Benefit [Member]
Future benefit payments
2013	480
2014	434
2015	427
2016	368
2017	369
2018-2022	$ 892

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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=21915506&loc=d3e1928-114920

+ Details

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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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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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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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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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