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Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$ 12,731		$ 12,731		$ 11,553
Unrecognized tax benefits that would affect effective tax rate	10,608		10,608		9,965
Interest and penalties on unrecognized benefits	957		957		770
Effective tax rates	28.50%	39.00%	33.30%	37.60%
Unrecognized tax benefits within the next twelve months	$ 4,985		$ 4,985

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Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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