Commitments (Schedule Of Future Minimum Lease Payments And Sublease Rental Income Under Non-Canceable Operating Lease Agreements) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Commitments [Abstract]
Minimum Lease Payments, 2013	$ 3,291
Minimum Lease Payments, 2014	1,619
Minimum Lease Payments, 2015	242
Minimum Lease Payments, 2016	7
Minimum Lease Payments, Total	5,159
Sublease Rental Income, 2013	87
Sublease rental income, 2014	37
Sublease Rental Income, Total	124
Net Minimum Lease Payments, 2013	3,204
Net minimum Lease Payments, 2014	1,582
Net minimum Lease Payments, 2015	242
Net minimum Lease Payments, 2016	7
Net Minimum Lease Payments, Total	$ 5,035

Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Current

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Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Due In Two Years

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Operating Leases Future Net Minimum Lease Payments

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Operating Leases Future Net Minimum Lease Payments Current

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Operating Leases Future Net Minimum Lease Payments Due in Four Years

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- Definition

Operating Leases Future Net Minimum Lease Payments Due in Three Years

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Operating Leases Future Net Minimum Lease Payments Due in Two Years

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph b(i)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification

-Topic 840

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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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