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Note 10 - Revolving Credit Facility (Details Textual) - USD ($)
1 Months Ended 2 Months Ended 12 Months Ended
May 31, 2015
Jan. 07, 2015
Oct. 01, 2016
Oct. 03, 2015
Sep. 29, 2015
Sep. 27, 2014
Jan. 31, 2016
Line of Credit Facility, Interest Rate at Period End             1.2795%
Payments of Dividends     $ 1,752,004 $ 4,780,572   $ 1,683,011  
Dividends Paid, Percentage of Net Income       46.00%      
Common Stock, Dividends, Per Share, Cash Paid   $ 1          
Interest Expense     $ 5,144 $ 6,285   $ 12,639  
Non-Special Dividend [Member]              
Payments of Dividends       $ 1,800,000      
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]              
Debt Instrument, Basis Spread on Variable Rate     85.00%        
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]              
Debt Instrument, Basis Spread on Variable Rate     165.00%        
Revolving Credit Facility [Member]              
Debt Instrument, Term 3 years            
Line of Credit Facility, Maximum Borrowing Capacity $ 5,000,000            
Line of Credit Facility, Commitment Fee Amount $ 0            
Debt Instrument, Covenants, Lender's Consent, Number of Shares to be Repurchased         261,310    
Stock Repurchased Price per Share         $ 17.49    
Long-term Line of Credit     $ 0