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Note 8 - Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Sep. 30, 2024
Intangibles assets, net $ 101,814 $ 125,042
Patents [Member]    
Intangibles assets, cost 1,220 1,227
Intangibles assets, accumulated amortization 1,220 1,227
Intangibles assets, net 0 0
Developed Technology Rights [Member]    
Intangibles assets, cost 111,501 109,949
Intangibles assets, accumulated amortization 63,408 55,191
Intangibles assets, net 48,093 54,758
Trademarks and Trade Names [Member]    
Intangibles assets, cost 727 726
Intangibles assets, accumulated amortization 293 195
Intangibles assets, net 434 531
Noncompete Agreements [Member]    
Intangibles assets, cost 248,846 248,036
Intangibles assets, accumulated amortization 195,559 178,283
Intangibles assets, net 53,287 69,753
Other Intangible Assets [Member]    
Intangibles assets, cost 362,294 359,938
Intangibles assets, accumulated amortization 260,480 234,896
Intangibles assets, net $ 101,814 $ 125,042