Annual report [Section 13 and 15(d), not S-K Item 405]

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

v3.25.3
Note 1 - Summary of Significant Accounting Policies - Finite Lived Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Sep. 30, 2024
Gross Carrying Amount $ 15,917 $ 10,136
Accumulated Amortization 6,564 5,465
Net Book Value Amount $ 9,353 $ 4,671
Customer Relationships [Member]    
Useful Life (Year) 15 years 15 years
Gross Carrying Amount $ 3,742 $ 3,742
Accumulated Amortization 1,902 1,653
Net Book Value Amount $ 1,840 $ 2,089
Certification Marks [Member]    
Useful Life (Year) 8 years 8 years
Gross Carrying Amount $ 1,068 $ 1,068
Accumulated Amortization 1,017 884
Net Book Value Amount 51 184
Trademarks [Member]    
Gross Carrying Amount 563 563
Accumulated Amortization 537 466
Net Book Value Amount $ 26 $ 97
Trademarks [Member] | Minimum [Member]    
Useful Life (Year) 8 years 8 years
Trademarks [Member] | Maximum [Member]    
Useful Life (Year) 10 years 10 years
Patents [Member]    
Useful Life (Year) 20 years 20 years
Gross Carrying Amount $ 1,443 $ 1,288
Accumulated Amortization 278 219
Net Book Value Amount 1,165 1,069
Computer Software, Intangible Asset [Member]    
Gross Carrying Amount 9,101 3,475
Accumulated Amortization 2,830 2,243
Net Book Value Amount $ 6,271 $ 1,232
Computer Software, Intangible Asset [Member] | Minimum [Member]    
Useful Life (Year) 1 year 1 year
Computer Software, Intangible Asset [Member] | Maximum [Member]    
Useful Life (Year) 10 years 3 years