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Goodwill and Other Intangible Assets
 6 Months Ended
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL AND OTHER INTANGIBLE ASSETS
GOODWILL AND OTHER INTANGIBLE ASSETS
A summary of the carrying amount of goodwill attributable to each segment, as well as the changes in such carrying amounts, is as follows:
(in thousands)
Industrial
 
Widia
 
Infrastructure
 
Total
Gross goodwill
$
411,458

 
$
41,186

 
$
633,211

 
$
1,085,855

Accumulated impairment losses
(137,204
)
 
(13,638
)
 
(633,211
)
 
(784,053
)
Balance as of June 30, 2018
$
274,254

 
$
27,548

 
$
—

 
$
301,802

 
 
 
 
 
 
 
 
Activity for the six months ended December 31, 2018:
 
 
 
 
 
 
 
Change in gross goodwill due to translation
(1,604
)
 
(195
)
 
—

 
(1,799
)
 
 
 
 
 
 
 
 
Gross goodwill
409,854

 
40,991

 
633,211

 
1,084,056

Accumulated impairment losses
(137,204
)
 
(13,638
)
 
(633,211
)
 
(784,053
)
Balance as of December 31, 2018
$
272,650

 
$
27,353

 
$
—

 
$
300,003


The components of our other intangible assets were as follows:
 
Estimated
Useful Life
(in years)
 
December 31, 2018
June 30, 2018
(in thousands)
 
Gross Carrying
Amount
 
Accumulated
Amortization
 
 
Gross Carrying
Amount
 
Accumulated
Amortization
Contract-based
3 to 15
 
$
7,055

 
$
(7,043
)
 
 
$
7,061

 
$
(7,036
)
Technology-based and other
4 to 20
 
46,333

 
(31,314
)
 
 
46,666

 
(30,923
)
Customer-related
10 to 21
 
205,189

 
(89,701
)
 
 
206,162

 
(85,301
)
Unpatented technology
10 to 30
 
31,697

 
(14,259
)
 
 
31,854

 
(13,096
)
Trademarks
5 to 20
 
12,377

 
(9,047
)
 
 
12,450

 
(8,978
)
Trademarks
Indefinite
 
17,199

 
—

 
 
17,609

 
—

Total
 
 
$
319,850

 
$
(151,364
)
 
 
$
321,802

 
$
(145,334
)