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Note 8 - Income Taxes - Effective Tax Expense (Benefit) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income taxes at Federal statutory rate	(34.00%)	(34.00%)
State income taxes, net of Federal income tax effect	(16.00%)	(13.00%)
Perm difference	(7.00%)	0.00%
Foreign tax rate differential	(0.20%)	2.40%
Change in valuation allowance	50.40%	43.50%
Other	6.80%	1.10%
Income tax provision	0.00%	0.00%

X

- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to permanent differences.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.

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