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Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets | 12 Months Ended
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Jun. 30, 2017
Goodwill and Intangible Assets [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, is as follows:
(in thousands) | Industrial |  | Widia |  | Infrastructure |  | Total
Gross goodwill | $ | 414,298 |  |  | $ | 41,073 |  |  | $ | 640,360 |  |  | $ | 1,095,731 |
Accumulated impairment losses | (137,204 | ) |  | (13,638 | ) |  | (527,500 | ) |  | (678,342 | )
Balance as of June 30, 2015 | $ | 277,094 |  |  | $ | 27,435 |  |  | $ | 112,860 |  |  | $ | 417,389 |
Activity for 2016: |  |  |  |  |  |  |
Divestiture | (1,075 | ) |  | — |  |  | (6,461 | ) |  | (7,536 | )
Translation | (4,518 | ) |  | (449 | ) |  | (688 | ) |  | (5,655 | )
Change in gross goodwill | (5,593 | ) |  | (449 | ) |  | (7,149 | ) |  | (13,191 | )
Impairment charges | — |  |  | — |  |  | (105,711 | ) |  | — |
Gross goodwill | 408,705 |  |  | 40,624 |  |  | 633,211 |  |  | 1,082,540 |
Accumulated impairment losses | (137,204 | ) |  | (13,638 | ) |  | (633,211 | ) |  | (784,053 | )
Balance as of June 30, 2016 | $ | 271,501 |  |  | $ | 26,986 |  |  | $ | — |  |  | $ | 298,487 |
Activity for 2017: |  |  |  |  |  |  |
Change in gross goodwill due to translation | 1,989 |  |  | 891 |  |  | — |  |  | 2,880 |
Gross goodwill | 410,694 |  |  | 41,515 |  |  | 633,211 |  |  | 1,085,420 |
Accumulated impairment losses | (137,204 | ) |  | (13,638 | ) |  | (633,211 | ) |  | (784,053 | )
Balance as of June 30, 2017 | $ | 273,490 |  |  | $ | 27,877 |  |  | $ | — |  |  | $ | 301,367 |
The components of our other intangible assets were as follows:
| Estimated Useful Life (in years) |  | June 30, 2017 |  |  | June 30, 2016
(in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  |  | Gross Carrying Amount |  | Accumulated Amortization
Contract-based | 3 to 15 |  | $ | 7,064 |  |  | $ | (7,014 | ) |  |  | $ | 7,152 |  |  | $ | (6,886 | )
Technology-based and other | 4 to 20 |  | 46,461 |  |  | (29,061 | ) |  |  | 47,323 |  |  | (27,011 | )
Customer-related | 10 to 21 |  | 205,502 |  |  | (74,669 | ) |  |  | 205,471 |  |  | (66,938 | )
Unpatented technology | 10 to 30 |  | 31,754 |  |  | (10,589 | ) |  |  | 31,837 |  |  | (4,614 | )
Trademarks | 5 to 20 |  | 12,401 |  |  | (8,648 | ) |  |  | 12,668 |  |  | (8,644 | )
Trademarks | Indefinite |  | 17,326 |  |  | — |  |  |  | 16,850 |  |  | — |
Total |  |  | $ | 320,508 |  |  | $ | (129,981 | ) |  |  | $ | 321,301 |  |  | $ | (114,093 | )
Amortization expense for intangible assets was $16.6 million, $20.8 million and $26.7 million for 2017, 2016 and 2015, respectively. Estimated amortization expense for 2018 through 2022 is $14.5 million, $14.1 million, $13.8 million, $13.5 million, and $13.1 million, respectively.

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- Definition Goodwill and Intangible Assets [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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