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Retirement Agreements And Other Postretirement Benefits (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Service cost - benefits earned during the year	$ 3,946	$ 3,155	$ 11,837	$ 9,463
Interest cost on the projected benefit obligation	7,103	6,966	21,309	20,900
(Accretion) amortization of unrecognized prior service cost	(380)	2,349	(1,139)	7,047
Amortization of unrecognized losses	1,573	171	4,720	511
Net periodic benefits costs	12,242	12,641	36,727	37,921
Employee benefits and other payments	$ 6,597,000		$ 6,597,000		$ 6,303,000

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

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

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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.

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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.

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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.

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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.

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