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Warrants And Derivative Liabilities (Schedule Of Fair Value Assumptions Used To Calculate The Value Of The Convertible Note Derivative Feature) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 0 Months Ended | 3 Months Ended | 0 Months Ended
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Apr. 04, 2012 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Dec. 20, 2012 Post-Modification [Member] | Dec. 20, 2012 Pre-Modification [Member]
Stock Price | $ 3.97 | $ 2.67 | $ 2.62 | $ 4.15 | $ 4.68 | $ 2.95 | $ 2.95
Percentage Volume Condition Met | 85.90% | 80.50% | 94.50% | 51.00% | 75.20% | 94.90% | 28.60%
Expected Volatility | 75.00% | 66.90% | 73.50% | 70.00% | 71.00% | 72.50% | 72.50%
Risk Free Rate | 0.44% | 0.20% | 0.23% | 0.23% | 0.33% | 0.25% | 0.25%
Bond Yield | 15.00% | 16.50% | 16.50% | 15.00% | 16.00% | 16.50% | 16.50%
Recovery Rate | 30.00% | 30.00% | 30.00% | 30.00% | 30.00% | 30.00% | 30.00%
Redeemable | yes | yes | yes | yes | yes | yes | yes
Total Time (years) | 2 years 6 months | 1 year 6 months 4 days | 1 year 9 months 4 days | 2 years 4 days | 2 years 3 months 11 days | 1 year 9 months 15 days | 1 year 9 months 15 days
Dilution Effect | yes | yes | yes | yes | yes | yes | yes
Indicated Percent of Par | 117.00% | 70.00% | 98.00% | 108.00% | 121.00% | 119.00% | 99.00%
Fair value | $ 3.8 | $ 0.5 | $ 1.0 | $ 2.8 | $ 4.5 | $ 1.5 | $ 0.9

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- Definition Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 15 -Paragraph 83 -URI http://asc.fasb.org/extlink&oid=6913464&loc=d3e34841-113949 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 10 -Subparagraph i -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 6 -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. + Details
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