Quarterly report pursuant to Section 13 or 15(d)

Cover
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Accounting Policies
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Notes Details

Note 14 - Income Taxes (Details Textual)

v3.10.0.1

Note 14 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
Note 14 - Income Taxes (Details Textual) - USD ($)	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%		35.00%
Tax rate, Sequestration Reduction			6.20%
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			$ 76,000
Unrecognized Tax Benefits, Ending Balance	$ 0		0		$ 0
Income Tax Expense (Benefit), Total	$ 76,259	$ (775,750)	65,330	$ (3,861,156)
Effective Income Tax Rate Reconciliation, Percent, Total	2.00%	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 Liabilities [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax	$ 1,100,000		$ 1,100,000
Other Noncurrent Assets [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax					$ 1,200,000

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