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Note 9 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Unrecognized Tax Benefits	$ 4.7		$ 4.7		$ 2.3
Effective Income Tax Rate Reconciliation, Percent	79.70%	35.90%	35.50%	35.80%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ 2.5
Deferred Tax Assets, Valuation Allowance	$ 1.9		$ 1.9

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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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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Amount 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 research tax credit.

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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