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Note 4 - DEBT (Details) - USD ($)
3 Months Ended
Mar. 10, 2016
May 31, 2019
Feb. 28, 2019
Jun. 15, 2018
Line of Credit [Member]        
Note 4 - DEBT (Details) [Line Items]        
Line of Credit Facility, Remaining Borrowing Capacity   $ 12,567,900 $ 12,439,300  
Line of Credit [Member] | Term Loan # 2 [Member]        
Note 4 - DEBT (Details) [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity   $ 15,000,000    
Notes Payable to Banks [Member] | Tranche A [Member]        
Note 4 - DEBT (Details) [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity $ 13,400,000      
Line of Credit Facility, Expiration Date   Aug. 15, 2019    
Debt Instrument, Interest Rate, Stated Percentage 4.23%      
Debt Instrument, Payment Terms interest is payable monthly      
Notes Payable to Banks [Member] | Tranche B [Member]        
Note 4 - DEBT (Details) [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity $ 5,000,000      
Line of Credit Facility, Expiration Date Dec. 01, 2025      
Debt Instrument, Payment Terms   interest payable monthly at the bank adjusted LIBOR Index plus a tiered pricing rate based on the Company’s Adjusted Funded Debt to EBITDA Ratio    
Debt Instrument, Interest Rate During Period   4.95%    
Notes Payable to Banks [Member] | Term Loan # 2 [Member]        
Note 4 - DEBT (Details) [Line Items]        
Debt Instrument, Face Amount   $ 4,000,000    
Debt Instrument, Maturity Date   Jun. 28, 2021    
Notes Payable to Banks [Member] | Term Loan # 1 [Member]        
Note 4 - DEBT (Details) [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity       $ 3,000,000
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member] | Term Loan # 2 [Member]        
Note 4 - DEBT (Details) [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity   $ 15,000,000    
Line of Credit Facility, Interest Rate at Period End   4.95%    
London Interbank Offered Rate (LIBOR) [Member] | Notes Payable to Banks [Member] | Term Loan # 2 [Member]        
Note 4 - DEBT (Details) [Line Items]        
Debt Instrument, Interest Rate During Period   4.95%