Note D - Pension And Other Postretirement Benefits (Details) - Components of Pension Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Pension Plan, Defined Benefit [Member]
Note D - Pension And Other Postretirement Benefits (Details) - Components of Pension Cost [Line Items]
Service cost	$ 748	$ 797	$ 2,408	$ 2,391
Interest cost	734	700	2,097	2,102
Expected return on plan assets	(1,229)	(1,148)	(3,828)	(3,443)
Recognized actuarial loss (gain)	478	611	1,622	1,831
Settlement loss	490		3,477
Net periodic benefit cost	1,221	960	5,776	2,881
Other Postretirement Benefit Plan, Defined Benefit [Member]
Note D - Pension And Other Postretirement Benefits (Details) - Components of Pension Cost [Line Items]
Service cost	288	288	865	866
Interest cost	182	218	545	653
Recognized actuarial loss (gain)	(181)	(161)	(542)	(485)
Net periodic benefit cost	$ 289	$ 345	$ 868	$ 1,034

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Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Gain or Loss

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An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Expected Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512136

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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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Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits.

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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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