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Note 10 - Income Taxes	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Income Tax Disclosure [Text Block]	(10) Income Taxes The income tax expense included in the accompanying unaudited condensed consolidated statements of income principally relates to the Company’s proportionate share of the pre-tax income of its wholly-owned subsidiaries. The determination of income tax expense for interim reporting purposes is based upon the estimated effective tax rate for the year, adjusted for the impact of any discrete items which are accounted for in the period in which they occur. The Company recorded tax expense of approximately 35% of income before income tax expense for each of the three-month periods ended September 30, 2016 and 2015. The Company recorded tax expense of approximately 35.4% and 35% of income before income tax expense for the nine-month periods ended September 30, 2016 and 2015, respectively. The increase in the effective tax rate for the nine-month period ended September 30, 2016 is due to a tax assessment of approximately $40,000 from one jurisdiction recorded in the first quarter of 2016.

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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 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

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