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Note 7 - Debt (Details Textual)
3 Months Ended
Apr. 25, 2015
Nov. 22, 2011
USD ($)
Rate
Sep. 30, 2015
USD ($)
Sep. 30, 2014
London Interbank Offered Rate (LIBOR) [Member]        
Debt Instrument, Basis Spread on Variable Rate     1.50%  
Line of Credit [Member]        
Debt Instrument, Term 3 years      
Term Loan [Member]        
Debt Instrument, Term   10 years    
Long-term Line of Credit     $ 10,400,000  
Debt Instrument, Face Amount   $ 15,500,000    
Debt Instrument, Interest Rate, Stated Percentage | Rate   4.50%    
Line of Credit Facility, Periodic Payment   $ 160,640    
Amended Agreement [Member] | Maximum [Member]        
Current Funded Debt to EBITDA Ratio     2.25  
Maximum [Member]        
Annual Capital Expenditures     $ 15,000,000  
Minimum [Member]        
Debt Service Coverage Rate     1.25  
Line of Credit Facility, Maximum Borrowing Capacity     $ 23,000,000  
Long-term Line of Credit     9,900,000  
Minimum Consolidated Cash and Liquid Investments Pursuant to New Loan and Security Agreement     $ 10,000,000  
Line of Credit Facility, Interest Rate During Period     2.10% 2.00%