Note 11 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Effective Income Tax Rate Reconciliation, Percent, Total	34.10%	(58.40%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Tax Cuts and Jobs Act, Interest Deduction Limits, Percentage of Adjusted Taxable Income Allowed	30.00%
Deferred Tax Asset, Interest Carryforward	$ 8.8

Percentage of the total adjusted taxable income allowed as part of the interest deductions pursuant to Tax Cuts and Jobs Act.

No definition available.

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- Definition

Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible interest carryforward.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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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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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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