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Note 16 - Stockholders' Equity (Detail) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Proceeds from Issuance of Private Placement | $ 1,753,849 | $ 3,859,933
Share-based Compensation | 57,292 | 0
Issued to Investor [Member] | Private Placement [Member] |  |
Warrants, grant date fair value | 131,310 | 178,077
Issued to Placement Agent [Member] | Private Placement [Member] |  |
Warrants, grant date fair value | 131,310 | 178,077
Placement Agent Fees [Member] | Private Placement [Member] |  |
Payments of Stock Issuance Costs | 210,000 |
Legal and Other Related Cost [Member] | Private Placement [Member] |  |
Payments of Stock Issuance Costs | 110,000 |
Private Placement [Member] | Placement Agent Warrants [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in Shares) |  | 449,740
Private Placement [Member] |  |
Number of units issued (in Shares) | 517,000 | 2,998,267
Unit, description | 1 share of the Company's common stock and a warrant to purchase 15% of 1 share of the Company's common stock | 1 share of its common stock and a warrant to purchase 15% of 1 share of its common stock
Price per unit (in Dollars per share) | $ 4.00 | $ 1.50
Proceeds from Issuance of Private Placement, Gross | 2,070,000 | 4,500,000
Proceeds from Issuance of Private Placement |  | 3,860,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares) | 77,550 | 449,740
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item) | 4.50 | 2.00
Warrant call price (in Dollars per share) | $ 5.00 | $ 4.00
Warrant, Call Feature | (i) a registration statement registering the common stock underlying the warrants becomes effective; (ii) the common stock is listed on a national securities exchange; and (iii) the closing price of the common stock equals or exceeds $5.00 | (i) a registration statement registering the common stock underlying the warrants becomes effective; (ii) the common stock is listed on a national securities exchange; and (iii) the closing price of the common stock equals or exceeds $4.00
Payments of Stock Issuance Costs |  | 449,740
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term | 3 years | 3 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 67.00% | 69.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 0.34% | 0.33%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 0.00% | 0.00%
Investor Relations Contract [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) | 100,000 |
Investor relation contract, total service period | 24 months |
Stock Issued During Period, Shares, Issued for Services (in Shares) | 50,000 |
Equity Issuance, Per Share Amount (in Dollars per share) | $ 2.75 |
Share-based Compensation | $ 57,292 |
Investor Relation Contract, service period | 5 months |
Investor relations contract, shares to be issued (in Shares) | 50,000 |
Investor Relation Contract, Stock to Be Issued, Issuance Date Description | within 180 business days of the contract signing date |

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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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 (f)(2)(ii) -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 e(2)(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. + Details
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