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Note 1 - Organization and Significant Accounting Policies (Details Textual)
12 Months Ended
Jul. 02, 2018
USD ($)
Jun. 28, 2020
USD ($)
shares
Jun. 30, 2019
USD ($)
shares
Jul. 01, 2019
USD ($)
Number of Stores   17    
Number of Lanes in Operation   682    
Number of Operating Segments   1    
Advertising Expense   $ 288,021 $ 361,744  
Weighted Average Number of Shares Outstanding, Basic and Diluted (in shares) | shares   5,160,971 5,160,971  
Other Liabilities, Current, Total   $ 395,629 $ 308,794  
Reclassification from Accumulated Other Comprehensive Income to Retained Earnings Related to Equity Securities $ 2,102,745      
Operating Lease, Right-of-Use Asset   1,812,937 $ 1,977,523
Operating Lease, Liability, Total   1,824,864   $ 1,977,523
Prize Fund Monies [Member]        
Other Liabilities, Current, Total   243,500 $ 300,920  
Prepaid Expenses and Other Current Assets [Member]        
Contract with Customer, Asset, after Allowance for Credit Loss, Current, Total   14,877    
Accrued Liabilities, Current [Member]        
Contract with Customer, Liability, Current   $ 163,348    
Baltimore Maryland [Member]        
Number of Stores   1    
Richmond, Virginia [Member]        
Number of Stores   4    
Jacksonville, Florida [Member]        
Number of Stores   3