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Fair Value Measurements (Schedule Of The Major Classes Of Liabilities Measured At Fair Value) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Derivative Liability [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
April 1, 2012 $ 1,024
Valuation of original derivative liability 3,779
Valuation of derivative liability attributable to modification 542
Mark to market adjustment (3,297)
Balance at December 31, 2012 1,024
Warrants [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
April 1, 2012 4,581
Warrant issuance with Senior Convertible Note 7,018
Warrant issuance with Senior Secured Term Loan 380
Mark to market adjustment (2,817)
Balance at December 31, 2012 $ 4,581