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Note 4 - Debt (Details Textual)
12 Months Ended
Nov. 22, 2017
USD ($)
Nov. 30, 2016
USD ($)
Nov. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
Revolving Credit Facility [Member]        
Line of Credit Facility, Maximum Borrowing Capacity $ 3,500,000      
Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Outstanding Eligible Accounts Receivable 85.00%      
Long-term Line of Credit, Total       $ 508,000
Line of Credit Facility, Interest Rate at Period End       5.25%
Line of Credit Facility, Remaining Borrowing Capacity       $ 261,000
Revolving Credit Facility [Member] | Minimum [Member]        
Debt Instrument, Interest Rate, Stated Percentage 4.75%      
Revolving Credit Facility [Member] | Prime Rate [Member]        
Debt Instrument, Basis Spread on Variable Rate 0.75%      
AGA [Member] | Company Note [Member] | President [Member]        
Debt Instrument, Face Amount   $ 1,000,000    
Debt Instrument, Interest Rate, Stated Percentage   5.00%    
Debt Instrument, Number of Monthly Payments   36    
Debt Instrument, Monthly Payment   $ 29,971    
AGA [Member] | Company Note 2 [Member] | President [Member]        
Minimum Service Revenue Covenant   $ 5,000,000    
Notes Payable, Related Parties       1,800,000
Debt Instrument, Contingent Consideration Accrued       $ 0
AGA [Member] | Company Note 2 [Member] | President [Member] | Scenario, Forecast [Member]        
Debt Instrument, Face Amount     $ 1,000,000  
Minimum Service Revenue Covenant     $ 7,000,000