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Fair Value Per Share and Aggregate (Detail) (USD $) | Sep. 30, 2013 | Jun. 30, 2013 | Sep. 30, 2012 | Jun. 30, 2012
--- | --- | --- | --- | ---
Accounting Policies [Line Items] |  |  |  |
Issued Warrants | 2,907,347 | 2,907,347 | 2,859,060 | 2,400,328
Estimated Total Fair Value in Aggregate | $ 62,000 | $ 143,000 |  |
June 2012 Warrants [Member] |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Issued Warrants | 562,551 |  |  |
Estimated Fair Value Per Share | $ 0.02 |  |  |
Estimated Total Fair Value in Aggregate | 12,000 | 27,000 |  |
July 2012 Warrants [Member] |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Issued Warrants | 338,013 |  |  |
Estimated Fair Value Per Share | $ 0.02 |  |  |
Estimated Total Fair Value in Aggregate | 7,000 | 17,000 |  |
August 2012 Warrants [Member] |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Issued Warrants | 120,719 |  |  |
Estimated Fair Value Per Share | $ 0.02 |  |  |
Estimated Total Fair Value in Aggregate | 3,000 | 6,000 |  |
October 2012 Warrants [Member] |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Issued Warrants | 48,287 |  |  |
Estimated Fair Value Per Share | $ 0.02 |  |  |
Estimated Total Fair Value in Aggregate | 1,000 | 3,000 |  |
Advisory Agreement Warrants [Member] |  |  |  |
Accounting Policies [Line Items] |  |  |  |
Issued Warrants | 1,837,777 |  |  |
Estimated Fair Value Per Share | $ 0.02 |  |  |
Estimated Total Fair Value in Aggregate | $ 39,000 | $ 90,000 |  |

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- Definition Number of warrants or rights outstanding. + References Reference 1: 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.(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Article 4 + Details
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- Definition Fair value portion of warrants not settleable in cash classified as equity. + 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 + Details
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