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Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2022
Mar. 31, 2022
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Carrying value of goodwill by segment              
Goodwill     $ 42,135 $ 60,636 $ 29,120 $ 42,135 $ 60,636
Goodwill impairment $ (12,300)   (12,300)     (12,316) (18,312)
Disposal Group, Including Discontinued Operation, Goodwill           (627)  
Translation adjustment         (97) (72) (189)
Goodwill attributable to reporting units at risk for impairment         16,600    
Goodwill impairment         0 12,316 18,312
Finite-Lived Intangible Assets [Line Items]              
Finite-Lived Intangible Assets, Gross         11,274 15,627  
Finite-Lived Intangible Assets, Accumulated Amortization         (9,623) (12,561)  
Net carrying amount         $ 1,651 3,066  
Maximum [Member]              
Carrying value of goodwill by segment              
Finite-Lived Intangible Asset, Useful Life         15 years    
Finite-Lived Intangible Assets [Line Items]              
Finite-Lived Intangible Asset, Useful Life         15 years    
Minimum [Member]              
Carrying value of goodwill by segment              
Finite-Lived Intangible Asset, Useful Life         6 years    
Finite-Lived Intangible Assets [Line Items]              
Finite-Lived Intangible Asset, Useful Life         6 years    
Intellectual Property [Member]              
Finite-Lived Intangible Assets [Line Items]              
Finite-Lived Intangible Assets, Gross         $ 130 2,483  
Finite-Lived Intangible Assets, Accumulated Amortization         (109) (2,371)  
Net carrying amount         21 112  
Customer Based [Member]              
Finite-Lived Intangible Assets [Line Items]              
Finite-Lived Intangible Assets, Gross         11,144 13,144  
Finite-Lived Intangible Assets, Accumulated Amortization         (9,514) (10,190)  
Net carrying amount         1,630 2,954  
Utility and Power Infrastructure              
Carrying value of goodwill by segment              
Goodwill     4,263 6,984 4,239 4,263 6,984
Goodwill impairment           0 (2,659)
Disposal Group, Including Discontinued Operation, Goodwill           0  
Translation adjustment         (33) (24) (62)
Process and Industrial Facilities              
Carrying value of goodwill by segment              
Goodwill     18,427 26,878 5,484 18,427 26,878
Goodwill impairment           (12,316) (8,445)
Disposal Group, Including Discontinued Operation, Goodwill           (627)  
Translation adjustment         0 0 (6)
Storage and Terminal Solutions              
Carrying value of goodwill by segment              
Goodwill     $ 19,445 26,774 19,397 19,445 26,774
Goodwill impairment   $ 18,300   $ (18,300)   0 (7,208)
Disposal Group, Including Discontinued Operation, Goodwill           0  
Translation adjustment         $ (64) $ (48) $ (121)