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Note 5 - Income Taxes	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Income Tax Disclosure [Text Block]	5 . Income Taxes The effective tax rate was 33.4% and 35.5% for the thirteen and thirty-nine weeks ended September 30, 2017, respectively, compared to 34.2% and 42.0% for the thirteen and thirty-nine weeks ended October 1, 2016, respectively. The 2017 effective tax rate differed from the statutory rate of 34% primarily due to the implementation of the new accounting standard related to the accounting for the tax impact of equity awards vesting and other discrete items. The fluctuation in the 2016 effective tax rate was due primarily to the effect of permanent differences.

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- Definition

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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