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Note D - Pension And Other Postretirement Benefits (Detail) - Components of Pension Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pension Plans, Defined Benefit [Member]
Service cost	$ 849	$ 797
Interest cost	666	701
Expected return on plan assets	(1,293)	(1,148)
Recognized actuarial loss (gain)	612	610
Settlement loss	1,386
Net periodic benefit cost	2,220	960
Other Postretirement Benefit Plans, Defined Benefit [Member]
Service cost	288	289
Interest cost	182	218
Recognized actuarial loss (gain)	(181)	(162)
Net periodic benefit cost	$ 289	$ 345

X

- Definition

Amount of gain (loss) from a decision to temporarily deviate from the substantive plan, or from a change in benefit obligation or plan asset value from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover or salary scale.

+ References

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-SubTopic 30

-Glossary Gain or Loss

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X

- Definition

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

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-Number 87

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X

- 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

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X

- 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

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-Name Statement of Financial Accounting Standard (FAS)

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- Definition

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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X

- 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

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-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

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-URI http://asc.fasb.org/extlink&oid=6525008



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