Annual report pursuant to Section 13 and 15(d)

Note 6- Leases (Details Textual)

v3.21.2
Note 6- Leases (Details Textual)
12 Months Ended
Jul. 31, 2021
USD ($)
ft²
a
Sep. 30, 2021
USD ($)
ft²
Sep. 30, 2020
USD ($)
Mar. 01, 2022
USD ($)
Feb. 12, 2020
ft²
Jun. 30, 2019
ft²
Jan. 01, 2015
Operating Lease, Right-of-Use Asset   $ 2,305,413 $ 2,539,100        
Operating Lease, Weighted Average Remaining Lease Term (Year)   3 years 1 month 2 days 3 years 11 months 26 days        
Operating Lease, Weighted Average Discount Rate, Percent   3.41% 3.48%        
Operating Lease, Payments   $ 1,289,982 $ 812,107        
Operating Lease, Liability, Total   $ 2,529,934          
7050 Winnetka Avenue North, Brooklyn Park, Minnesota [Member]              
Area of Real Estate Property (Square Foot) | ft²   71,000       14,000  
Lessee, Operating Lease, Term of Contract (Year)             10 years 2 months 1 day
Operating Lease Termination Fee   $ 249,000          
Tijuana, Mexico [Member]              
Area of Real Estate Property (Square Foot) | ft² 46,000            
Lessee, Operating Lease, Term of Contract (Year) 3 years            
Tijuana, Mexico 2 [Member]              
Area of Real Estate Property (Square Foot) | ft²         52,000    
Lessee, Operating Lease, Term of Contract (Year)         42 months    
Lessee, Operating Lease, Number of Options to Renew         2    
Lessee, Operating Lease, Renewal Term (Year)         3 years    
Tijuana, Mexico 3 [Member]              
Area of Real Estate Property (Square Foot) | a 318,000            
Lessee, Operating Lease, Number of Options to Renew 2            
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year) 7 years            
Lessee, Operating Lease, Lease Not yet Commenced, Renewal Term (Year) 5 years            
Operating Lease, Monthly Payment $ 162,232            
Operating Lease, Payments, Increase, Percentage 2.00%            
Tijuana, Mexico 3 [Member] | Forecast [Member]              
Operating Lease, Right-of-Use Asset       $ 9,432,000      
Operating Lease, Liability, Total       $ 9,432,000      
Tijuana, Mexico 3 [Member] | Lease Mandatory Contractual Term [Member]              
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year) 5 years