|
Note G - Pensions and Other Postretirement Benefits (Details) (USD $)
|
3 Months Ended | 12 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2013
Retirees Age 65 And Over [Member]
Defined Benefit Postretirement Health Coverage [Member]
|
Dec. 31, 2013
Retirees Under Age 65 [Member]
Defined Benefit Postretirement Health Coverage [Member]
|
Dec. 31, 2013
One Percentage Point Change in Assumed Rate of Return [Member]
|
Dec. 31, 2013
One Percentage Point Increase in Discount Rate [Member]
|
Dec. 31, 2013
One Percentage Point Decrease in Discount Rate [Member]
|
Dec. 31, 2013
Equity Securities [Member]
|
Dec. 31, 2013
Fixed Income Securities [Member]
|
Dec. 31, 2013
Alternative Investments [Member]
|
Dec. 31, 2013
Cash and Cash Equivalents [Member]
|
Dec. 31, 2013
Defined Contribution Pension [Member]
|
Dec. 31, 2012
Defined Contribution Pension [Member]
|
Dec. 31, 2011
Defined Contribution Pension [Member]
|
Dec. 31, 2013
Minimum [Member]
Pension Plan, Defined Benefit [Member]
|
Dec. 31, 2013
Maximum [Member]
Pension Plan, Defined Benefit [Member]
|
|
| Note G - Pensions and Other Postretirement Benefits (Details) [Line Items] | |||||||||||||||||
| Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 1,340,000 | $ 1,220,000 | $ 1,000,000 | ||||||||||||||
| Defined Benefit Plan, Ultimate Health Care Cost Trend Rate | 0.00% | 5.00% | |||||||||||||||
| Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements | 3,000,000 | 4,200,000 | 2,900,000 | ||||||||||||||
| Unrecognized Actuarial Gain (Loss) in Excess of Benefit Obligation, Percentage | 10.00% | ||||||||||||||||
| Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 20.00% | 50.00% | 0.00% | 0.00% | |||||||||||||
| Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 40.00% | 70.00% | 12.00% | 10.00% | |||||||||||||
| Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year | 4,000,000 | 5,000,000 | |||||||||||||||
| Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components | 223,000 | ||||||||||||||||
| Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation | 1,650,000 | ||||||||||||||||
| Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components | 209,000 | ||||||||||||||||
| Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation | 1,530,000 | ||||||||||||||||
| Defined Benefit Plan Effect On Pension Expense | $ 738,000 | $ 1,500,000 | $ 1,800,000 | ||||||||||||||