Quarterly report pursuant to Section 13 or 15(d)

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Note 14 - Income Taxes (Details Textual)

v3.10.0.1

Note 14 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
Note 14 - Income Taxes (Details Textual) - USD ($)	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%		35.00%
Unrecognized Tax Benefits, Ending Balance	$ 0		$ 0		$ 0
Income Tax Expense (Benefit), Total	$ (10,929)	$ (1,631,234)	(10,929)	$ (3,085,406)
Effective Income Tax Rate Reconciliation, Percent, Total	21.00%	34.00%
Domestic Tax Authority [Member] \| Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Total	$ 131,800,000		131,800,000
Domestic Tax Authority [Member] \| Internal Revenue Service (IRS) [Member] \| Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	9,700,000		9,700,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total	20,400,000		$ 20,400,000
Earliest Tax Year [Member]
Open Tax Year			2014
Latest Tax Year [Member]
Open Tax Year			2017
Other Noncurrent Assets [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax	$ 1,200,000		$ 1,200,000		$ 1,200,000

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.

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