Annual report pursuant to Section 13 and 15(d)

Note 1 - Summary of Significant Accounting Policies - Finite Lived Intangible Assets (Details)

v3.20.2
Note 1 - Summary of Significant Accounting Policies - Finite Lived Intangible Assets (Details) - USD ($)
 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Gross carrying amount $ 6,093,980 $ 5,934,500
Accumulated amortization 1,264,933 787,365
Net book value amount $ 4,829,047 $ 5,147,135
Customer Relationships [Member]    
Useful life (Year) 15 years 15 years
Gross carrying amount $ 3,742,000 $ 3,742,000
Accumulated amortization 654,850 405,384
Net book value amount $ 3,087,150 $ 3,336,616
Certification Marks [Member]    
Useful life (Year) 8 years 8 years
Gross carrying amount $ 1,068,000 $ 1,068,000
Accumulated amortization 350,437 216,937
Net book value amount $ 717,563 $ 851,063
Trademarks [Member]    
Useful life (Year) 8 years 8 years
Gross carrying amount $ 563,000 $ 563,000
Accumulated amortization 184,734 114,359
Net book value amount $ 378,266 $ 448,641
Patents [Member]    
Useful life (Year) 20 years 20 years
Gross carrying amount $ 689,889 $ 530,409
Accumulated amortization 56,257 38,247
Net book value amount $ 633,632 $ 492,162
Other Intangible Assets [Member]    
Useful life (Year) 5 years 5 years
Gross carrying amount $ 31,091 $ 31,091
Accumulated amortization 18,655 12,438
Net book value amount $ 12,436 $ 18,653