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Note 11 - Income Taxes	6 Months Ended
	Jun. 30, 2019
Notes to Financial Statements
Income Tax Disclosure [Text Block]	11. Income Taxes The Company files income tax returns in the United States Federal jurisdiction, in a limited number of foreign jurisdictions, and in many state jurisdictions. With few exceptions, the Company is no longer subject to United States Federal, state, or foreign income tax examinations for years before 2014. The Company recorded an income tax expense (benefit) at an estimated effective income tax rate of 13.1% and 11.0% for the three and six months ended June  30, 2019, respectively, and 1.9% and 4.7% for the three and six months ended June  30, 2018, respectively. The Company’s estimated effective income tax rate for the three and six months ended June  30, 2019 was impacted by the final Section 965 regulations issued in June 2019 related to certain foreign tax credit aspects of the transition tax, as well as the estimated changes in the Company’s valuation allowance. The Company had $4.4  million of unrecognized income tax benefits as of June  30, 2019 and December  31, 2018. The Company does not believe it is reasonably possible that the total amounts of unrecognized income tax benefits will change in the following twelve months; however, actual results could differ from those currently expected. Effectively all of the unrecognized income tax benefits would affect the Company’s effective income tax rate if recognized at some point in the future. The Company recognizes interest and penalties related to uncertain income tax positions in Income tax expense (benefit).

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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