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Convertible Preferred Stock and Stock Warrants (Details) (USD $) | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 14, 2012 | Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Aug. 12, 2009
Class of Warrant or Right [Line Items] |  |  |  |  |  |
Exercisable Warrants expires |  |  |  | Dec. 08, 2014 |  |
Contingent Warrants expires |  |  |  | Sep. 11, 2014 |  |
Convertible Preferred Stock And Stock Warrants (Textual) [Abstract] |  |  |  |  |  |
Issuance of cumulative convertible preferred stock and warrants |  |  |  |  |  | 16,000
Issue price of cumulative convertible preferred stock and warrants |  |  |  |  |  | $ 1,000
Issuance of detachable warrants to acquire common stock |  |  |  |  |  | 155
Issuance of detachable Contingent Warrants to acquire common stock |  |  |  |  |  | 500
Proceeds from host contract |  |  |  | 68.00% |  |
Net proceeds from host contract |  |  |  |  |  | $ 10,800,000
Fair value of the detachable warrants |  |  |  |  |  | 5,200,000
Beneficial conversion discount associated with preferred stock |  |  |  | 5,200,000 |  |
Conversion period, in months |  |  |  |  |  | 36 months
Convertible Preferred Stock shares issued upon conversion |  | 434.782 |  | 434.782 |  |
Cumulative convertible preferred stock, liquidation preference |  | $ 300 |  | $ 300 |  |
Dividends accrued, liquidation preference annual payment rate |  |  |  | 15.00% |  |
Criteria for availing obligation to pay dividend for the shareholders |  |  |  | Previously paid an amount at least eight quarterly dividends |  |
Change in fair value of warrant liability |  | 0 | (7,802,000) | (2,649,000) | (18,609,000) |
Revalued warrant liability |  | $ 6,500,000 |  | $ 14,000,000 |  |
Volatility rate used to calculate fair value of warrant liability |  |  |  | 58.10% |  |
Risk-free rate of return used to calculate fair value of warrant liability |  |  |  | 0.36% |  |
Number of warrants exercisable |  |  |  | 1,675,250 |  |
Assume Dividend Rate | 0 |  |  |  |  |
Exercisable [Member] |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |
Exercise price of the exercisable warrants |  |  |  |  |  | 2.31
Contingent [Member] |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |
Exercise price of the exercisable warrants |  |  |  |  |  | 2.45
Exercisable and Contingent [Member] |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |
Exercise price of the exercisable warrants |  | 1.21 |  | 1.21 |  |

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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d)(1)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 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. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 + Details
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