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Income Taxes (Summary Of The Activity Related To Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2007	Jan. 01, 2007
Income Taxes [Abstract]
Unrecognized tax benefits - gross beginning balance	$ 2,160us-gaap_UnrecognizedTaxBenefits	$ 2,171us-gaap_UnrecognizedTaxBenefits	$ 1,974us-gaap_UnrecognizedTaxBenefits	$ 11,400us-gaap_UnrecognizedTaxBenefits	$ 10,800us-gaap_UnrecognizedTaxBenefits
Gross increases - prior period tax positions	1,600us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	(11)us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	197us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Unrecognized tax benefits - gross ending balance	$ 3,760us-gaap_UnrecognizedTaxBenefits	$ 2,160us-gaap_UnrecognizedTaxBenefits	$ 2,171us-gaap_UnrecognizedTaxBenefits	$ 11,400us-gaap_UnrecognizedTaxBenefits	$ 10,800us-gaap_UnrecognizedTaxBenefits

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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