| **Note 8 - Business Combination (Details) (USD $)**                                                                  | 3 Months Ended | 9 Months Ended |             |        | 9 Months Ended | 36 Months Ended |           | 3 Months Ended | 8 Months Ended | 9 Months Ended | 49 Months Ended | 3 Months Ended | 9 Months Ended |           |
|----------------------------------------------------------------------------------------------------------------------|----------------|----------------|-------------|--------|----------------|-----------------|-----------|----------------|----------------|----------------|-----------------|----------------|----------------|-----------|
||
| **Note 8 - Business Combination (Details) [Line Items]**                                                             |           |           |        |   |           |            |      |           |           |           |            |           |           |      |   |   |
| Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)                               |           | 12,199,431     |        |   |           | 18,299,147      |      |           |           |           |            |           |           |      |   |   |
| Business Combination Percentage of Total Shares Issuable                                                             | 40.00%         | 40.00%         |        |   |           |            |      |           |           |           |            |           |           |      |   | 50.00% |
| Business Combination, Excercise Price of Outstanding Options and RSAs                                                | $ 1.25         | $ 1.25         |        |   |           |            |      |           |           |           |            |           |           |      |   |   |
| Business Combination, Consideration Transferred                                                                      |           | 24,592,000     |        |   |           |            |      |           |           | 1,040,000      |            |           |           |      | 500,000 |   |
| Business Acquisition, Equity Interest Issued or Issuable, Value Assigned                                             | 16,600,000     | 16,600,000     |        |   |           |            | 7,500,000 |           |           |           |            |           |           |      |   |   |
| Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | 878,000        | 933,000        |        |   |           |            |      |           |           |           |            |           | 880,000        | 930,000   |   |   |
| Business Combination, Contingent Consideration, Liability                                                            |           |           |        |   |           |            |      |           |           |           |            |           | 8,433,000      | 8,433,000 |   |   |
| Business Combination, Acquisition Related Costs                                                                      |           |           |        |   | 1,000,000      |            |      |           |           |           |            |           |           |      |   |   |
| Equity Method Investment, Ownership Percentage                                                                       |           |           |        | 51.00% |           |            |      |           |           | 100.00%        |            |           |           |      |   |   |
| Notes Payable                                                                                                        | 1,010,000      | 1,010,000      |        |   |           |            |      |           |           | 1,200,000      |            |           |           |      |   |   |
| Debt Instrument, Fair Value Disclosure                                                                               | 1,044,000      | 1,044,000      |        |   |           |            |      |           |           | 1,040,000      |            |           |           |      |   |   |
| Debt Instrument, Periodic Payment, Principal                                                                         |           |           |        |   |           |            |      | 100,000        | 60,000         |           | 260,000         | 260,000        |           |      |   |   |
| Long-term Debt, Gross                                                                                                |           |           |        |   |           |            |      |           |           | 1,010,000      |            |           |           |      |   |   |
| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net                           |           |           |        |   |           |            |      |           |           | 500,000        |            |           |           |      |   |   |
| Goodwill                                                                                                             | $ 17,118,000   | $ 17,118,000   | $ 2,066,000 |   |           |            |      |           |           | $ 500,000      |            |           |           |      |   |   |

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| - Definition
Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.
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Number of shares of equity interests issued or issuable to acquire entity.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.
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| - Definition
Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.
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| - Definition
Amount of (increase) decrease in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.
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| - Definition
Amount of liability recognized arising from contingent consideration in a business combination.
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| - Definition
Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.
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| - Definition
Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.
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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.
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| - Definition
Amount of the required periodic payments applied to principal.
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| - Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.
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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
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| - Definition
Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.
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