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Warrants And Derivative Liabilities (Schedule Of The Fair Value Of The Warrants Using The Black-Scholes Option Pricing Model - Loan And Security Agreement) (Details) (USD $) In Millions, unless otherwise specified | 0 Months Ended | 3 Months Ended | 6 Months Ended | 0 Months Ended | 1 Months Ended | 6 Months Ended | 9 Months Ended
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Dec. 31, 2012 | Apr. 04, 2012 | Jun. 30, 2012 | Sep. 30, 2012 | Jun. 05, 2012 Loan And Security Agreement [Member] | Jun. 30, 2012 Loan And Security Agreement [Member] | Sep. 30, 2012 Loan And Security Agreement [Member] | Dec. 31, 2012 Loan And Security Agreement [Member]
Derivative [Line Items] |  |  |  |  |  |  |  |
Risk free interest rate | 0.23% | 0.44% | 0.33% | 0.23% | 0.77% | 0.80% | 0.64% | 0.75%
Expected annual dividend yield | 16.50% | 15.00% | 16.00% | 15.00% | 0.00% | 0.00% | 0.00% | 0.00%
Expected volatility | 73.50% | 75.00% | 71.00% | 70.00% | 79.90% | 80.32% | 81.18% | 80.14%
Term (years) | 1 year 9 months 4 days | 2 years 6 months | 2 years 3 months 11 days | 2 years 4 days | 5 years 6 months | 5 years 5 months 9 days | 5 years 2 months 5 days | 4 years 11 months 5 days
Fair Value |  |  |  |  | $ 0.4 | $ 0.5 | $ 0.4 | $ 0.2

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- Definition Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Risk-free interest rate assumption used in valuing an instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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