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Note 14 - Employee Retirement Plans (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Jun. 28, 2020
Jun. 30, 2019
Jul. 01, 2018
Defined Contribution Plan Required Age Of Employees To Become Eligible To Participate (Year) 21 years    
Defined Contribution Plan Number Of Months Of Service Must Be Completed To Participate (Month) 30 days    
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 1,500 $ 900 $ 0
Defined Benefit Plan Participants Deferment Percentage Of Salary And Performance And Nonperformance Based Bonus 1.00%    
Interest Expense [Member]      
Deferred Compensation Arrangement With Individual Gain (Loss) On Investment $ 300 700 800
Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member]      
Deferred Compensation Arrangement with Individual, Contributions by Employer 0 0 $ 0
Deferred Compensation Arrangement with Individual, Recorded Liability $ 13,400 $ 11,800  
Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] | Maximum [Member]      
Defined Benefit Plan Participants Deferment Percentage Of Salary And Performance And Nonperformance Based Bonus 100.00%