Note 1 - Accounting Policies (Details Textual) - USD ($) $ in Millions		12 Months Ended
	Dec. 22, 2017	Jun. 30, 2019	Jul. 01, 2018	Jul. 02, 2017
Employee Service Share-based Compensation, Excess Tax Benefit, Shares				700,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%	28.00%
Accounting Standards Update 2016-09 [Member]
Employee Service Share-based Compensation, Excess Tax Benefit from Compensation Expense				$ 1