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Note 4 - Acquisition (Details Textual) - USD ($)		3 Months Ended		6 Months Ended
	Jan. 08, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2016	Dec. 31, 2015
Diffusion LLC [Member] | Former Equity Holders of Diffusion LLC [Member]
Percentage of Common Stock Outstanding Owned	84.10%
Diffusion LLC [Member] | Acquisition-related Costs [Member]
Business Combination, Acquisition Related Costs		$ 0	$ 0	$ 1,644,768	$ 0
Diffusion LLC [Member] | Success Fee Agreement Costs [Member]
Payments for Other Fees	$ 1,000,000
Stock Issued During Period, Shares, Issued for Services	457,000
Stock Issued During Period, Value, Issued for Services	$ 487,500
Diffusion LLC [Member]
Business Combination, Number of Shares Called by Each Previously Held Unit of Membership Interest	3.652658
Business Combination, Period Following Merger in Which Receipt of Cash for Discontinued Product Assets Would Trigger Contingent Value Right Payements	5 years
In Process Research and Development [Member] | Scenario, Forecast [Member]
Intangible Assets, Net (Excluding Goodwill)						$ 0
In Process Research and Development [Member]
Intangible Assets, Net (Excluding Goodwill)		$ 9,317,000		$ 9,317,000			$ 0
Executive Officers [Member]
Severance Costs	$ 3,000,000
Common Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001		$ 0.001			$ 0.001
Stock Issued During Period, Shares, Issued for Services				456,427
Stock Issued During Period, Value, Issued for Services				$ 1,409,363

X

- Definition

Number of shares of the reporting entity's common stock into which each previously held unit of membership interest may be converted.

+ References

No definition available.

+ Details

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X

- Definition

The period following a merger that, if the reporting entity receives net cash payments for the sale of any of the assets related to a discontinued product line, would trigger a required payment to holders of contingent value rights.

+ References

No definition available.

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- Definition

Percentage of all classes of common stock held by shareholders.

+ References

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X

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460

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- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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Amount of cash outflow for fees classified as other.

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-SubTopic 10
-Section 45
-Paragraph 25
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- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 230
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-Paragraph 28
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- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

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Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

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