Note 11 - Income Taxes (Details Textual) $ in Millions	12 Months Ended
	Jun. 27, 2021 USD ($)
Deferred Tax Assets, Capital Loss Carryforwards	$ 25.2
Operating Loss Carryforwards, Total	4.5
Unrecognized Tax Benefits, Ending Balance	1.1
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 0.1
Domestic Tax Authority [Member]
Open Tax Year	2019 2020
State and Local Jurisdiction [Member]
Open Tax Year	2016 2017 2018 2019 2020