Employee Benefit Plans (Details 5) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Combined benefits expected to be paid for all Company defined benefit plans
Medicare Part D Subsidy, 2013	$ (152)
Medicare Part D Subsidy, 2014	(173)
Medicare Part D Subsidy, 2015	(194)
Medicare Part D Subsidy, 2016	(220)
Medicare Part D Subsidy, 2017	(248)
Medicare Part D Subsidy, 2018-2022	(1,774)
Pension Benefits
Combined benefits expected to be paid for all Company defined benefit plans
2013	4,242
2014	4,601
2015	5,389
2016	5,590
2017	6,217
2018-2022	33,406
Expected Postretirement Benefit Payout
Combined benefits expected to be paid for all Company defined benefit plans
2013	1,393
2014	1,482
2015	1,571
2016	1,659
2017	1,754
2018-2022	$ 10,217

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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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

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

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Amount of the prescription drug subsidy receipts to be received after the fifth fiscal year following the latest fiscal year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 60

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-Paragraph 4

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