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Note 12 - Income Taxes	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Income Tax Disclosure [Text Block]	12 . Income Taxes The effective income tax rates for the nine months ended September 30, 2017 and 2016 were 35.3% and 36.7%, respectively. The decrease in the effective income tax rate in 2017 was primarily due to non-recurring discrete tax items  that favorably impacted the current year and unfavorably impacted the prior year. The Company files U.S. federal, U.S. state, and foreign jurisdiction tax returns that are subject to examination up to the expiration of the statute of limitations. We believe the tax positions taken on our returns would be sustained upon an exam, or where a position is uncertain, adequate reserves have been recorded. The Company is currently under examination in multiple jurisdictions and is working to address all matters. While the Company does not believe any material taxes or penalties are due, there is a possibility that the ultimate tax outcome of an examination may result in differences from what was recorded. Such differences may affect the provision for income taxes in the period in which the determination is made, and could impact the company’s financial results.

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The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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