Annual report pursuant to Section 13 and 15(d)

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

v3.22.2.2
Note 1 - Summary of Significant Accounting Policies - Finite Lived Intangible Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Accumulated amortization $ 4,030 $ 3,458
Net book value amount 6,376 4,696
Gross carrying amount $ 10,407 $ 8,154
Customer Relationships [Member]    
Useful life (Year) 15 years 15 years
Accumulated amortization $ 1,273 $ 904
Net book value amount $ 3,559 2,838
Gross carrying amount   $ 3,742
Certification Marks [Member]    
Useful life (Year) 8 years 8 years
Accumulated amortization $ 133 $ 484
Net book value amount 451 584
Gross carrying amount 584 $ 1,068
Trademarks [Member]    
Useful life (Year)   8 years
Accumulated amortization 586 $ 255
Net book value amount 720 308
Gross carrying amount $ 1,306 $ 563
Trademarks [Member] | Minimum [Member]    
Useful life (Year) 8 years  
Trademarks [Member] | Maximum [Member]    
Useful life (Year) 10 years  
Patents [Member]    
Useful life (Year) 20 years 20 years
Accumulated amortization $ 118 $ 85
Net book value amount 813 706
Gross carrying amount $ 931 $ 790
Patents [Member] | Maximum [Member]    
Useful life (Year) 20 years  
Developed Technology Rights [Member]    
Useful life (Year) 10 years  
Accumulated amortization $ 5  
Net book value amount 290  
Gross carrying amount $ 295  
Other Intangible Assets [Member]    
Useful life (Year) 5 years 5 years
Accumulated amortization $ 6 $ 25
Net book value amount 0 6
Gross carrying amount 6 31
Computer Software, Intangible Asset [Member]    
Accumulated amortization 1,909 1,705
Net book value amount 543 255
Gross carrying amount $ 2,452 $ 1,960
Computer Software, Intangible Asset [Member] | Minimum [Member]    
Useful life (Year) 1 year 1 year
Computer Software, Intangible Asset [Member] | Maximum [Member]    
Useful life (Year) 3 years 3 years