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Note 7 - Common Stock Issuance (Detail) (USD $) | 0 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
May 04, 2012 | Apr. 30, 2012 | Apr. 17, 2012 | Apr. 30, 2012 | Jul. 31, 2012 | Jun. 30, 2012 | Jun. 30, 2011
Stock Issued During Period, Shares, New Issues | 196,635 | 103,585 | 93,050 |  | 393,600 | 196,635,000 |
Sale of Stock, Price Per Share (in Dollars per share) |  | $ 16 | $ 16 | $ 16 | $ 17 |  |
Proceeds from Issuance of Common Stock (in Dollars) |  | $ 1,657,360 | $ 1,488,800 |  |  | $ 2,329,000 | $ 716,000
Payments of Stock Issuance Costs (in Dollars) |  |  |  | $ 816,000 |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item) |  |  |  |  |  | 16 |

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- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section H + Details
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- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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