Income Taxes (Schedule of Components of Income Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Taxes [Abstract]
Income tax expense/(benefit) based on income from continuing operations, at estimated tax rates of 35.4% in 2012 and 34.6% in 2011, respectively	$ 5,681	$ 7,753	$ 13,545	$ 15,778
Settlement of pension plan			(39,460)
Provision for change in estimated tax rates	1,968	241
Income tax from continuing operations before discrete items	7,649	7,994	(25,915)	15,778
Provision for/resolution of tax audits and contingencies	454		(5,597)	(1,378)
Adjustments to prior period tax liabilities	(912)	21	(912)	21
Enacted legislation change	(226)	(118)	(226)	(118)
Total income tax (benefit)/expense from continuing operations	$ 6,965	$ 7,897	$ (32,650)	$ 14,303
Estimated tax rate	35.40%	34.60%	35.40%	34.60%

No authoritative reference available.

No definition available.

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Income tax/(benefit) from continuing operations before discrete items.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.

+ References

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to changes in the income tax rates under enacted tax laws in the period.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the year/accounting period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to all other items not otherwise listed in the existing taxonomy.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the current period and the expected income tax expense or benefit computed attributable to revisions of previously reported income tax expense.

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The sum of the differences between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in all income tax contingencies, whether recorded or adjusted, during the period.

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