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Fair Value Measurements (Tables) | 3 Months Ended
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Jun. 30, 2012
Fair Value Measurements [Abstract] |
Schedule Of Assets Carried At Fair Value |
|  | Total |  | Quoted Prices in |  | Significant Other |  | Significant
|  | Carrying |  | Active Markets |  | Observable Inputs |  | Unobservable Inputs
|  | Value |  | (Level 1) |  | (Level 2) |  | (Level 3)
June 30, 2012: |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |
Cash equivalents | $ | 40,387 | $ | 40,387 | $ | — | $ | —
Short-term commercial paper |  | 5,209 |  | — |  | 5,209 |  | —
Liabilities: |  |  |  |  |  |  |  |
Derivative liability | $ | 4,536 | $ | — | $ | — | $ | 4,536
Warrants |  | 9,029 |  | — |  | — |  | 9,029
|  | Total |  | Quoted Prices in |  | Using Significant Other |  | Using Significant
|  | Carrying |  | Active Markets |  | Observable Inputs |  | Unobservable Inputs
|  | Value |  | (Level 1) |  | (Level 2) |  | (Level 3)
March 31, 2012: |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |
Cash equivalents | $ | 23,485 | $ | 23,485 | $ | — | $ | —
Short-term commercial paper |  | 5,304 |  | — |  | 5,304 |  | —
Schedule Of The Major Classes Of Liabilities Measured At Fair Value |
|  | Derivative Liability |  | Warrants
April 1, 2012 | $ | — | $ | —
Valuation of derivative liability |  | 3,779 |  | —
Warrant issuance with Senior Convertible Notes |  | — |  | 7,018
Warrant issuance with Senior Secured Term Loan |  | — |  | 380
Mark to market adjustment |  | 757 |  | 1,631
Balance at June 30, 2012 | $ | 4,536 | $ | 9,029

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- Definition Tabular disclosure of the amount of gains or losses for the period included in earnings or resulted in a change to net assets, have arisen from the use of significant unobservable inputs (level 3) to measure the fair value of assets, liabilities, and financial instruments classified in shareholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(1) -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 Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1),(d) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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