v3.25.4
Goodwill and Intangible Assets Intangibles (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Sep. 30, 2025
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 117,168 $ 117,168
Finite-Lived Intangible Assets, Accumulated Amortization (79,002) (75,523)
Intangible Assets, Net (Excluding Goodwill) 38,166 41,645
Trademarks and Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 16,199 16,199
Finite-Lived Intangible Assets, Accumulated Amortization (8,976) (8,549)
Intangible Assets, Net (Excluding Goodwill) $ 7,223 $ 7,650
Trademarks and Trade Names [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 5 years 5 years
Trademarks and Trade Names [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 20 years 20 years
Technical Library    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 20 years 20 years
Finite-Lived Intangible Assets, Gross $ 400 $ 400
Finite-Lived Intangible Assets, Accumulated Amortization (246) (241)
Intangible Assets, Net (Excluding Goodwill) 154 159
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 98,372 98,372
Finite-Lived Intangible Assets, Accumulated Amortization (68,854) (66,024)
Intangible Assets, Net (Excluding Goodwill) $ 29,518 $ 32,348
Customer Relationships [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 1 year 1 year
Customer Relationships [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 15 years 15 years
Noncompete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 5 years 5 years
Finite-Lived Intangible Assets, Gross $ 940 $ 940
Finite-Lived Intangible Assets, Accumulated Amortization (78) (31)
Intangible Assets, Net (Excluding Goodwill) 862 909
Backlog [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 1,257 1,257
Finite-Lived Intangible Assets, Accumulated Amortization (848) (678)
Intangible Assets, Net (Excluding Goodwill) $ 409 $ 579
Backlog [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 1 year 1 year
Backlog [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 2 years 2 years