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Note 3 - Business Combination (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Sep. 01, 2021
Feb. 28, 2022
Feb. 28, 2021
Feb. 28, 2022
Feb. 28, 2021
Feb. 22, 2022
Aug. 31, 2021
Aug. 30, 2021
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net, Total   $ 0 $ 0 $ 3,951,550 $ 0      
Revolving Credit Facility [Member] | PNC Bank [Member]                
Line of Credit Facility, Maximum Borrowing Capacity $ 5,000,000 5,000,000   5,000,000   $ 5,000,000 $ 5,000,000 $ 3,000,000
Harita-NTI Limited [Member]                
Business Acquisition, Percentage of Voting Interests Acquired 50.00%              
Business Combination, Consideration Transferred, Total $ 6,250,000              
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage 50.00%              
Business Combination, Step Acquisition, Equity Interest in Acquiree, including Subsequent Acquisition, Percentage, Total 100.00%              
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net, Total $ 3,951,550     3,951,550        
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual   4,680,103            
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual       496,748        
Business Combination, Acquisition Related Costs   65,000   115,000        
Business Acquisition, Pro Forma Revenue   $ 2,257,542   $ 4,271,892        
Harita-NTI Limited [Member] | Customer Relationships [Member]                
Acquired Finite-lived Intangible Assets, Weighted Average Discount Rate 15.30%              
Harita-NTI Limited [Member] | Customer Relationships and Assembled Workforce [Member]                
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) 15 years