Retirement Agreements And Other Postretirement Benefits (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Service cost - benefits earned during the year	$ 4,187us-gaap_DefinedBenefitPlanServiceCost	$ 3,667us-gaap_DefinedBenefitPlanServiceCost
Interest cost on the projected benefit obligation	7,693us-gaap_DefinedBenefitPlanInterestCost	7,618us-gaap_DefinedBenefitPlanInterestCost
(Accretion) amortization of unrecognized prior service cost	1,097	554
Amortization of unrecognized losses	879	0
Net periodic benefits costs	13,856	11,839
Employee benefits and other payments	$ 7,570,000		$ 7,111,000

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This represents the entire liability recognized in the balance sheet that is associated with the defined benefit pension plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.15)

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-SubTopic 210

-Section S99

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-Subparagraph (SX 210.9-03.15)

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-URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919

+ Details

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- Definition

The amount of gains or losses recognized in net periodic benefit cost.

+ References

+ Details

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- Definition

The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Prior Service Cost

-URI http://asc.fasb.org/extlink&oid=49177896

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 1

-Subparagraph (h)(1)

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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

+ References

+ Details

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- Definition

The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

+ References

+ Details

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- Definition

The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the 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 (h)(1)

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-Publisher FASB

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-Glossary Service Cost (Component of Net Periodic Pension Cost)

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