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Note 9 - Income Taxes (Details Textual) | 3 Months Ended | 6 Months Ended
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Jun. 25, 2022 | Jun. 26, 2021 | Jun. 25, 2022 | Jun. 26, 2021
Effective Income Tax Rate Reconciliation, Percent, Total | 23.60% | 15.70% | 23.20% | 14.80%

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateContinuingOperations
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration