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Warrants and Derivative Liabilities (Tables) | 3 Months Ended
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Jun. 30, 2013
Schedule of Fair Value Assumptions Used to Calculate Value of Convertible Note Derivative Feature | Following is a summary of the key assumptions used to value the convertible notes derivative feature:
|  | June 30, |
|  | 2013 |
Fiscal Year 2013 |  |  |  |
Principal Outstanding (000’s) |  | $ | 14,389 |
Stock Price |  | $ | 2.64 |
Percentage Volume Condition Met |  |  | 87.5 | %
Expected Volatility |  |  | 65.8 | %
Risk Free Rate |  |  | 0.21 | %
Bond Yield |  |  | 16.7 | %
Recovery Rate |  |  | 37.0 | %
Redeemable |  |  | yes |
Total Time (years) |  |  | 1.26 |
Dilution Effect |  |  | yes |
Fair Value |  | $ | 0.5 million |
Fair Value as a Percent of Par |  |  | 3.3 | %
|  |  |  |  |  |  |  | Post- modification |  |  | Pre-modification |  |  |  |  |  |  |  |  |  |
|  | March 31, |  |  | December 31, |  |  | December 20, |  |  | December 20, |  |  | September 30, |  |  | June 30, |  |  | April 4, |
|  | 2013 |  |  | 2012 |  |  | 2012 |  |  | 2012 |  |  | 2012 |  |  | 2012 |  |  | 2012 |
Fiscal Year 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal Outstanding (000’s) |  | $ | 15,380 |  |  | $ | 20,944 |  |  | $ | 20,944 |  |  | $ | 24,617 |  |  | $ | 24,191 |  |  | $ | 25,278 |  |  | $ | 25,000 |
Stock Price |  | $ | 2.67 |  |  | $ | 2.62 |  |  | $ | 2.95 |  |  | $ | 2.95 |  |  | $ | 4.15 |  |  | $ | 4.68 |  |  | $ | 3.97 |
Percentage Volume Condition Met |  |  | 80.5 | % |  |  | 94.5 | % |  |  | 94.9 | % |  |  | 28.6 | % |  |  | 51.0 | % |  |  | 75.2 | % |  |  | 85.9 | %
Expected Volatility |  |  | 66.9 | % |  |  | 73.5 | % |  |  | 72.5 | % |  |  | 72.5 | % |  |  | 70.0 | % |  |  | 71.0 | % |  |  | 75.0 | %
Risk Free Rate |  |  | 0.20 | % |  |  | 0.23 | % |  |  | 0.25 | % |  |  | 0.25 | % |  |  | 0.23 | % |  |  | 0.33 | % |  |  | 0.44 | %
Bond Yield |  |  | 16.5 | % |  |  | 16.5 | % |  |  | 16.5 | % |  |  | 16.5 | % |  |  | 15.0 | % |  |  | 16.0 | % |  |  | 15.0 | %
Recovery Rate |  |  | 30.0 | % |  |  | 30.0 | % |  |  | 30.0 | % |  |  | 30.0 | % |  |  | 30.0 | % |  |  | 30.0 | % |  |  | 30.0 | %
Redeemable |  |  | yes |  |  |  | yes |  |  |  | yes |  |  |  | yes |  |  |  | yes |  |  |  | yes |  |  |  | yes |
Total Time (years) |  |  | 1.51 |  |  |  | 1.76 |  |  |  | 1.79 |  |  |  | 1.79 |  |  |  | 2.01 |  |  |  | 2.28 |  |  |  | 2.5 |
Dilution Effect |  |  | yes |  |  |  | yes |  |  |  | yes |  |  |  | yes |  |  |  | yes |  |  |  | yes |  |  |  | yes |
Fair Value as a Percent of Par |  |  | 3.4 | % |  |  | 4.9 | % |  |  | 7.1 | % |  |  | 3.9 | % |  |  | 11.4 | % |  |  | 17.9 | % |  |  | 15.1 | %
Fair Value |  | $ | 0.5 million |  |  | $ | 1.0 million |  |  | $ | 1.5 million |  |  | $ | 0.9 million |  |  | $ | 2.8 million |  |  | $ | 4.5 million |  |  | $ | 3.8 million |
Securities Purchase Agreement [Member] |
Schedule of Fair Value of Warrants Using Black-Scholes Option Pricing Model | Following is a summary of the key assumptions used to calculate the fair value of the warrant:
|  | June 30, 2013 |
Fiscal Year 2013 |  |  |  |
Risk-free interest rate |  |  | 1.13 | %
Expected annual dividend yield |  |  | 0.0 | %
Expected volatility |  |  | 71.9 | %
Term (years) |  |  | 4.27 |
Fair Value |  | $ | 3.0 million |
|  | March 31, |  |  | December 31, |  |  | September 30, |  |  | June 30, |  |  | April 4, |
|  | 2013 |  |  | 2012 |  |  | 2012 |  |  | 2012 |  |  | 2012 |
Fiscal Year 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate |  |  | 0.67 | % |  |  | 0.75 | % |  |  | 0.63 | % |  |  | 0.77 | % |  |  | 1.19 | %
Expected annual dividend yield |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | %
Expected volatility |  |  | 71.7 | % |  |  | 80.6 | % |  |  | 80.9 | % |  |  | 80.8 | % |  |  | 80.0 | %
Term (years) |  |  | 4.51 |  |  |  | 4.76 |  |  |  | 5.01 |  |  |  | 5.28 |  |  |  | 5.5 |
Fair Value |  | $ | 3.4 million |  |  | $ | 4.4 million |  |  | $ | 7.1 million |  |  | $ | 8.6 million |  |  | $ | 7.0 million |
Loan and Security Agreement [Member] |
Schedule of Fair Value of Warrants Using Black-Scholes Option Pricing Model | Following is a summary of the key assumptions used to calculate the fair value of the warrant:
|  | June 30, |
|  | 2013 |
Fiscal Year 2013 |  |  |  |
Risk-free interest rate |  |  | 1.20 | %
Expected annual dividend yield |  |  | — | %
Expected volatility |  |  | 72.3 | %
Term (years) |  |  | 4.43 |
Fair Value |  | $ | 0.2 million |
|  | March 31, |  |  | December 31, |  |  | September 30, |  |  | June 30, |  |  | June 5, |
|  | 2013 |  |  | 2012 |  |  | 2012 |  |  | 2012 |  |  | 2012 |
Fiscal Year 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate |  |  | 0.70 | % |  |  | 0.75 | % |  |  | 0.64 | % |  |  | 0.80 | % |  |  | 0.77 | %
Expected annual dividend yield |  |  | — | % |  |  | — | % |  |  | — | % |  |  | — | % |  |  | — | %
Expected volatility |  |  | 72.01 | % |  |  | 80.14 | % |  |  | 81.18 | % |  |  | 80.32 | % |  |  | 79.99 | %
Term (years) |  |  | 4.68 |  |  |  | 4.93 |  |  |  | 5.18 |  |  |  | 5.44 |  |  |  | 5.5 |
Fair Value |  | $ | 0.2 million |  |  | $ | 0.2 million |  |  | $ | 0.4 million |  |  | $ | 0.5 million |  |  | $ | 0.4 million

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + 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 (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13476-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610 + Details
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- Definition Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41678-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41641-113959 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41638-113959 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 Reference 11: 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.(n)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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