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Note 4 - Stockholders' Equity | 12 Months Ended
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Dec. 31, 2012
Stockholders' Equity Note Disclosure [Text Block] | 4. STOCKHOLDERS’ EQUITY Authorized Shares The Company is authorized to issue two classes of capital stock consisting of up to 5,000,000 shares of preferred stock, $0.001 par value, and 50,000,000 shares of common stock, $0.001 par value. On May 4, 2007, the Board of Directors designated up to 1,761,900 shares of preferred stock as Series A preferred stock with the following rights and preferences:
| · | Priority – the Series A preferred stock shall rank, in all respects, including the payment of dividends and upon liquidation, senior and prior to the common stock and other equity of the Company not expressly made senior or pari passu with the Series A preferred stock.
| · | Dividends –dividends at the rate per annum of $0.119 per share shall accrue from the date of issuance of any shares of Series A preferred stock, payable upon declaration by the Board of Directors. Accruing dividends shall be cumulative; provided, however, that except as set forth below for the liquidation preference, the Company shall be under no obligation to pay such dividends.
| · | Liquidation preference – in the event of any voluntary or involuntary liquidation, dissolution or winding up of the affairs of the Company, then, before any distribution or payment shall be made to the holders of any junior securities, the holders of the Series A preferred stock then outstanding shall be entitled to be paid in cash out of the assets of the Company available for distribution to its stockholders (on a pari passu basis with the holders of any series of preferred stock ranking on liquidation on a parity with the Series A preferred stock) an amount per share equal to the sum of the Series A Original Issue Price plus any dividends accrued but unpaid thereon, whether or not declared, together with any other dividends declared but unpaid thereon. If the assets of the Company are insufficient to pay the aggregate liquidation preference and the liquidation preference of any series of preferred stock ranking on liquidation on a parity with the Series A preferred stock, the holders of the Series A preferred stock and the holders of any series of preferred stock ranking on liquidation on a parity with the Series A preferred stock shall share ratably with one another in any such distribution or payment in proportion to the full amounts to which they would otherwise be respectively entitled before any distribution shall be made to the holders of the junior securities. The “Series A Original Issue Price” shall mean $1.70 per share, subject to adjustment.
| · | Voting rights – the holders of shares of Series A preferred stock shall be entitled to vote with the holders of the common stock, and with the holders of any other series of preferred stock, voting together as a single class, upon all matters submitted to a vote of stockholders of the Company. Each holder of shares of Series A preferred stock shall be entitled to the number of votes equal to the product (rounded down to the nearest number of whole shares) of 0.729 times the largest number of shares of common stock into which all shares of Series A preferred stock held of record by such holder could then be converted.
| · | Conversion – each share of Series A preferred stock shall be convertible, subject to adjustment only in the event of stock splits, stock dividends, recapitalizations and similar events that would affect all of stockholders, at the option of the holder thereof, at any time and from time to time, into such number of fully paid and nonassessable shares of common stock as determined by dividing the Series A Original Issue Price by the Series A Conversion Price (as defined) in effect at the time of conversion. The “Series A Conversion Price” shall initially be equal to $1.70.
As of December 31, 2012, 138,400 shares of Series A preferred stock were outstanding. Cumulative unpaid dividends and the liquidation preference relating to the Series A preferred stock at December 31, 2012 was $174,000 and $329,000, respectively. Common Stock Purchase Warrants On May 4, 2007, the Company issued warrants to purchase 2,059,307 shares of common stock as a component of a private equity placement. The warrants are exercisable at any time during the period beginning November 4, 2007 (six months after their issuance) and ending May 4, 2013 (six years after their issuance). The exercise price of the warrants is $5.00 per share. The number of shares of common stock for which the warrants are exercisable, and the related exercise price per share, are subject to adjustment only in the event of stock splits, stock dividends, recapitalizations and similar events that would affect all stockholders. On October 19, 2007, the Company issued warrants to purchase 3,141,499 shares of common stock in connection with a convertible debentures financing. The warrants consisted of seven-year warrants to purchase 1,495,952 shares of common stock, one-year warrants to purchase 1,495,952 shares of common stock, and five-year warrants to purchase 149,595 shares of common stock. The term for each of the warrants began six months and one day after their respective issuance and each have an exercise price of $3.52 per share. The exercise price and the number of shares underlying the warrants are subject to adjustment for stock dividends and splits, combinations, and reclassifications, certain rights offerings and distributions to common stockholders, and mergers, consolidations, sales of all or substantially all assets, tender offers, exchange offers, reclassifications or compulsory share exchanges. In addition, subject to certain exceptions, the exercise price and number of shares underlying the warrants are subject to anti-dilution adjustments from time to time if the Company issues its common stock or equivalent securities at below the exercise price for the warrants. If, at any time after the earlier of October 19, 2008 and the completion of the then applicable holding period under Rule 144, there is no effective registration statement for the underlying shares of common stock that are then required to be registered, the warrants may be exercised by means of a cashless exercise. Such one-year warrants expired unexercised on April 21, 2009. At December 31, 2012, warrants to purchase 3,704,854 shares of common stock were outstanding. The weighted-average remaining contractual life of outstanding warrants as of December 31, 2012 was 1.1 years.

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- Definition The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Preferred Stock -URI http://asc.fasb.org/extlink&oid=6521494 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187143-122770 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section B -Paragraph 7, 11A -Chapter 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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