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Note 12 - Income Taxes	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Income Tax Disclosure [Text Block]	12. INCOME TAXES The Company’s effective tax rate was 19.6% and 37.3% for the three months ended March 31, 2018 and 2017, respectively. The decrease in the effective tax rate for the three months ended March 31, 2018 compared to the same quarter in the prior year primarily relates to a reduction in the Federal corporate income tax rate from 35% to 21% as a result of the 2017 Federal tax reform legislation and $2.4 million of income tax benefits attributable to equity-based compensation awards recorded during the three months ended March 31, 2018. The Company recognized the income tax effects of the 2017 Federal tax reform legislation in its consolidated financial statements included in the 2017 Form 10 -K in accordance with Staff Accounting Bulletin No. 118, which provides SEC staff guidance for the application of ASC 740 – Income Taxes . As such, the Company’s financial results for 2017 reflected the income tax effects of the 2017 Federal tax reform legislation for which the accounting under ASC 740 was complete as well as provisional amounts for those specific income tax effects of the 2017 Federal tax reform legislation for which the accounting under ASC 740 was incomplete but a reasonable estimate could be determined. The Company has recognized the provisional tax impacts related to acceleration of depreciation and the revaluation of deferred tax assets and liabilities and included these amounts in its consolidated financial statements included in the 2017 Form 10 -K. The ultimate impact may differ from these provisional amounts, possibly materially, due to, among other things, additional analysis, changes in interpretations and assumptions the Company has made, additional regulatory guidance that may be issued and actions the Company may take as a result of the 2017 Federal tax reform legislation. The accounting is expected to be complete when the Company’s 2017 Federal corporate income tax return is filed later in 2018.

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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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