Note 11 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 29, 2019	Dec. 30, 2018	Jun. 28, 2020
Effective Income Tax Rate Reconciliation, Percent, Total	25.50%	25.40%	24.70%	24.90%
Income Tax Examination, Year under Examination			2017 2018
Unrecognized Tax Benefits, Ending Balance	$ 0.9		$ 0.9
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 0.2		$ 0.2
Domestic Tax Authority [Member]
Open Tax Year			2015 2016 2017 2018 2019
Foreign Tax Authority [Member]
Open Tax Year			2014 2015 2016 2017 2018 2019
Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					21.00%