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Stockholders' Equity (Details Textual) (USD $) | 1 Months Ended | 12 Months Ended |  |  |  | 12 Months Ended | 1 Months Ended | 12 Months Ended |  |  | 12 Months Ended |  | 1 Months Ended |  | 12 Months Ended |  |  |  |
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May 31, 2003 | Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2010 | Dec. 31, 2009 | May 31, 2005 | Sep. 30, 2012 2012 plan [Member] | May 31, 2011 Common Stock [Member] | Dec. 31, 2010 Common Stock [Member] | May 31, 2011 Private placement [Member] Common Stock [Member] | Oct. 31, 2010 Private placement [Member] Common Stock [Member] | Sep. 30, 2012 Restricted Stock [Member] | Sep. 30, 2011 Restricted Stock [Member] | Mar. 15, 2011 Restricted Stock [Member] | Jan. 31, 2011 Restricted Stock [Member] | Sep. 30, 2012 Warrant [Member] | May 31, 2005 Warrant [Member] | Jun. 30, 2011 Warrant [Member] Minimum [Member] | Jun. 30, 2011 Warrant [Member] Maximum [Member] | Dec. 31, 2009 Warrant [Member] Convertible debentures [Member] | Sep. 30, 2012 Outstanding Restricted Stock [Member] | Sep. 30, 2012 Restricted Stock Units (RSUs) [Member] | Sep. 30, 2011 Restricted Stock Units (RSUs) [Member] | Sep. 30, 2010 Restricted Stock Units (RSUs) [Member] | Sep. 30, 2012 Restricted Stock Units (RSUs) [Member] 2012 plan [Member]
Stockholders' Equity (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock sold to investors |  | 25,995,216 | 24,144,366 |  |  |  |  | 2,857,143 |  |  | 500,000 |  |  | 300,000 |  |  | 321,428 |  |  | 337,501 |  |  |  |  |
Common stock per share value |  | $ 0.001 | $ 0.001 |  |  |  |  | $ 5.25 |  |  | $ 1.50 |  |  | $ 5.12 |  |  |  |  |  |  |  |  |  |  |
Common stock issued exercise price |  | 0.91 |  |  | 0.91 | 0.70 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of common stock |  |  | $ 14,595,366 |  |  |  |  | $ 15,000,000 |  |  | $ 750,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal fees in connection with private placement |  |  |  |  |  |  |  |  |  | 80,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock reserved for issuance of restricted stock units |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |
Warrants exercised expiration period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Feb. 01, 2012 | May 01, 2012 |  |  |  |  |  |
Common stock exercised |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 330,834 |  |  |  |  |  |  |  |  |
Common stock outstanding |  | 25,995,216 | 24,144,366 |  |  |  |  |  |  |  |  |  |  |  |  | 6,667 |  |  |  |  |  |  |  |  |
Warrants expiration period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2014-12 |  |  |  |  |  |  |  |  |
Common stock issued upon the conversion of outstanding convertible debentures |  |  |  |  |  |  |  |  | 1,418,573 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash compensation to placement agent fees |  |  |  |  |  |  |  | 1,050,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Placement agent out-of-pocket expenses reimbursed amount |  |  |  |  |  |  |  | 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from private placement |  |  |  |  |  |  |  | 13,845,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total intrinsic value of options exercised |  | 14,215,750 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recognized stock-based compensation expense related to the outstanding restricted stock units |  |  |  |  |  |  |  |  |  |  |  | 529,072 | 179,343 |  |  |  |  |  |  |  |  |  |  |  |
Warrants issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 288,582 |  |  |  |  |  |  |  |  |
Number of shares cancelled in consideration of the issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 32,846 |  |  |  |  |  |  |  |  |
Allocated Share-based Compensation Expense |  | 2,599,858 | 1,271,238 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation expense |  | 6,161,479 |  |  |  |  |  |  |  |  |  | 2,543,465 |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of common stock |  |  |  |  |  |  | 723,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock unit outstanding under 2012 plan |  | 3,512,286 | 4,553,904 | 4,534,328 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 515,834 | 300,000 |  | 215,834
Number of common stock reserved for future grants |  |  |  |  |  |  | 1,245,067 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of granted stock option | 400000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock reserved for issuance under stock holders incentive plan |  |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated average forfeiture rate |  | 14.85% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average period for unrecognized compensation expense expected to be recognized |  | 3 years 3 months 18 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years 6 months |  |  |  |
Per share weighted average fair value of options granted |  | $ 5.97 |  |  |  |  |  |  |  |  |  | $ 8.44 |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock unit installment period |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |
Tax benefit |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(2) -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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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(b) -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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -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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