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Note 6 - Convertible Notes to Related Parties (Details) (USD $) | 0 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |  | 1 Months Ended
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Jul. 29, 2011 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Apr. 30, 2011 | Apr. 30, 2011 Initial Closing Amount [Member] | Apr. 30, 2011 Purchase Option [Member] | May 31, 2012 Notes Payable, Other Payables [Member] | Jun. 30, 2011 Notes Payable, Other Payables [Member] | Dec. 31, 2013 Notes Payable, Other Payables [Member] | Apr. 30, 2011 Notes Payable, Other Payables [Member] | Apr. 30, 2011 Common Stock [Member] | Apr. 30, 2011 Senior Notes [Member] | Apr. 30, 2011 Principal Amount [Member]
Note 6 - Convertible Notes to Related Parties (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Debt Issuable In Connection With Private Placement1 |  |  |  |  | $ 4,500,000 |  |  |  |  |  | $ 4,500,000 |  |  |
Notes Authorized Under Private Placement Initial Closing |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |  |
Purchase Option Under Private Placement |  |  |  |  |  |  | 3,000,000 |  |  |  |  |  |  |
Debt Instrument Conversion Ratio, Shares (in Shares) |  |  |  |  |  |  |  |  |  |  |  | 1,250 |  |
Debt Instrument Conversion Ratio, Multiple of Principal |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | 5,033,000 |  |  | 1,500,000 |
Proceeds from Debt, Net of Issuance Costs |  |  |  |  |  |  |  | 3,000,000 |  |  |  |  | 1,300,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  | 6.00% |  | 20.00% |  |  |
Debt Instrument, Maturity Date |  |  |  |  |  |  |  |  | May 02, 2021 |  |  |  |  |
Beneficial Ownership After Conversion |  |  |  |  |  |  |  |  | 9.99% |  |  |  |  |
Notice Period Associated with Beneficial Ownership Percentage Limitation, Convertible Notes |  |  |  |  |  |  |  |  | 61 days |  |  |  |  |
Common Shares Registered For Resale In Connection With Convertible Notes (in Shares) | 3,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Paid-in-Kind Interest |  |  |  |  |  |  |  |  |  | 291,000 |  |  |  |
Interest Expense, Debt, Excluding Amortization |  | 295,000 | 216,000 | 97,000 |  |  |  |  |  |  |  |  |  |
Amortization of Debt Discount (Premium) |  | 533,000 | 389,000 | 103,000 |  |  |  |  |  |  |  |  |  |
Carrying Value of Notes Outstanding |  | 1,025,000 | 492,000 |  |  |  |  |  |  | 1,025,000 |  |  |  |
Debt Instrument, Unamortized Discount |  |  |  |  |  |  |  |  |  | 4,008,000 |  |  |  |
Debt Instrument, Convertible, Number of Equity Instruments |  |  |  |  |  |  |  |  |  | 6,000,000 |  |  |  |
Interest Payable, Current |  |  |  |  |  |  |  |  |  | $ 75,000 |  |  |  |

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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the holder. + References No definition available. + Details
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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 + Details
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