Note 11 - Income Taxes (Details Textual) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Dec. 30, 2018	Dec. 31, 2017	Jul. 01, 2018
Effective Income Tax Rate Reconciliation, Percent, Total	25.40%	15.20%	24.90%	8.70%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					28.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability		$ (12.2)
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability, Per Diluted Share		$ 0.18
Unrecognized Tax Benefits, Ending Balance	$ 0.6		$ 0.6
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 0.1		$ 0.1
Domestic Tax Authority [Member]
Income Tax Examination, Year under Examination			2016
Open Tax Year			2015 2016 2017
State and Local Jurisdiction [Member]
Open Tax Year			2013
Foreign Tax Authority [Member]
Open Tax Year			2013