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Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill [Table Text Block]
A summary of the carrying amount of goodwill attributable to each segment, as well as the changes in such, is as follows:
(in thousands)Metal CuttingInfrastructureTotal
Gross goodwill$450,853 $633,211 $1,084,064 
Accumulated impairment losses(150,842)(633,211)(784,053)
Balance as of June 30, 2019$300,011 $— $300,011 
Activity for the year ended June 30, 2020:
Change in gross goodwill due to translation(2,612)— (2,612)
Impairment charges(26,819)— (26,819)
Gross goodwill448,241 633,211 1,081,452 
Accumulated impairment losses(177,661)(633,211)(810,872)
Balance as of June 30, 2020$270,580 $— $270,580 
Activity for the year ended June 30, 2021:
Change in gross goodwill due to translation7,035 — 7,035 
Gross goodwill455,276 633,211 1,088,487 
Accumulated impairment losses(177,661)(633,211)(810,872)
Balance as of June 30, 2021$277,615 $— $277,615 
Components of Other Intangible Assets [Table Text Block]
The components of our other intangible assets were as follows: 
 Estimated
Useful Life
(in years)		June 30, 2021June 30, 2020
(in thousands)Gross Carrying
Amount		Accumulated
Amortization		Gross Carrying
Amount		Accumulated
Amortization
Technology-based and other
4 to 20
$33,632 $(24,413)$32,713 $(22,612)
Customer-related
10 to 21
183,338 (98,901)181,408 (88,112)
Unpatented technology
10 to 30
31,957 (20,575)31,586 (17,890)
Trademarks
5 to 20
13,268 (10,083)13,087 (8,772)
TrademarksIndefinite11,818 — 11,160 — 
Total$274,013 $(153,972)$269,954 $(137,386)