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Note E - Debt (Details Textual) - USD ($)
6 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Sep. 29, 2017
Jun. 30, 2017
Notes, Loans and Financing Receivable, Net, Current $ 1,500,000    
Proceeds from Long-term Lines of Credit 0      
Line of Credit Facility, Remaining Borrowing Capacity 10,000,000      
Notes Receivable [Member] | Kaged Muscle LLC [Member]        
Notes, Loans and Financing Receivable, Net, Current   $ 1,500,000    
Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member]        
Line of Credit Facility, Maximum Borrowing Capacity 10,000,000      
Line of Credit Facility, Maximum Lending Capacity Using Borrowed Funds     $ 1,500,000  
Line of Credit Facility, Commitment Fee Amount 0      
Long-term Line of Credit 0      
Long-term Debt, Percentage Bearing Fluctuating Interest, Threshold Amount 100,000      
Minimum Prepayment Amount Under Line of Credit $ 100,000      
Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]        
Debt Instrument, Basis Spread on Variable Rate 1.25%      
Debt Instrument Basis Spread on Elected Fixed Rate Borrowing 1.25%      
Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member] | Maximum [Member]        
Ratio of Indebtedness to Net Capital 1.25      
Ratio of Total Current Assets to Total Current Liabilities 1.75