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Goodwill and Other Intangible Assets Schedule of Goodwill (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Goodwill [Line Items]      
Goodwill, Gross $ 1,093,598 $ 1,082,439 $ 1,080,423
Goodwill, Accumulated Impairment Loss (810,872) (810,872) (810,872)
Goodwill 282,726 271,567 269,551
Business Combination, Price of Acquisition, Expected   3,800  
Goodwill, Foreign Currency Translation, Gain (Loss) 11,159    
Goodwill, Period Increase (Decrease)   (1,784)  
Metal Cutting [Member]      
Goodwill [Line Items]      
Goodwill, Gross 460,387 449,228 447,212
Goodwill, Accumulated Impairment Loss 177,661 177,661 177,661
Goodwill 282,726 271,567 269,551
Business Combination, Price of Acquisition, Expected   3,800  
Goodwill, Foreign Currency Translation, Gain (Loss) 11,159    
Goodwill, Period Increase (Decrease)   (1,784)  
Infrastructure [Member]      
Goodwill [Line Items]      
Goodwill, Gross 633,211 633,211 633,211
Goodwill, Accumulated Impairment Loss 633,211 633,211 633,211
Goodwill $ 0 0 $ 0
Goodwill, Period Increase (Decrease)   $ 0