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Note 9 - Common Stock and Warrants (Detail) (USD $) | 0 Months Ended | 1 Months Ended | 6 Months Ended | 12 Months Ended | 72 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 14, 2011 | Jul. 08, 2011 | Jun. 04, 2009 | Oct. 31, 2012 | Nov. 30, 2011 | Jul. 08, 2011 | Oct. 31, 2007 | Dec. 14, 2011 | Dec. 31, 2011 | Jun. 30, 2011 | Oct. 19, 2010 | Jun. 30, 2009
Stock Issued During Period, Shares, New Issues |  | 363,636 |  |  | 666,667 | 363,636 | 300,000 | 570,000 |  |  |  |
Accrued Professional Fees (in Dollars) |  |  | $ 500,000 |  |  |  |  |  |  |  |  | $ 500,000
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued |  |  | 59,312 |  |  |  |  |  |  | 72,782 |  |
Common Stock Price Per Share (in Dollars per share) |  |  | $ 8.43 |  |  |  |  |  |  |  |  |
Stock Covered By Registration Statement (in Dollars) |  |  |  |  |  |  |  |  |  | 50,000,000 |  |
Proceeds from Issuance or Sale of Equity (in Dollars) |  |  |  |  | 6,000,000 | 4,000,000 |  |  |  |  |  |
Sale of Stock, Price Per Share (in Dollars per share) | $ 9 | $ 11 |  |  | $ 9 | $ 11 |  | $ 9 |  |  |  |
Proceeds from Issuance of Common Stock (in Dollars) | 5,100,000 | 4,000,000 |  |  |  |  |  | 5,100,000 | 15,129,000 |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  | 250,000 | 1 |  |  |  |  |  |  |
Common Stock Shares Available for Warrants Exercised |  |  |  |  | 1 |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item) |  |  |  | 10 | 13 |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) |  |  |  | $ 5,000,000 |  |  |  |  |  |  | $ 10,000,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  | 2 years |  |  |  |  |  |  |  |
Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  | 3 |  |  |  |  |  |  |
Sale of Stock, Price Per Share (in Dollars per share) |  |  |  |  | $ 9 |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item) |  |  |  |  | 13 |  |  |  |  |  |  |

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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 + Details
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