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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
The carrying amount of goodwill | 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 | $ | 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 |
Activity for the nine months ended March 31, 2018: |  |  |  |  |  |  |
Change in gross goodwill due to translation | 7,611 |  |  | 455 |  |  | — |  |  | 8,066 |
Gross goodwill | 418,305 |  |  | 41,970 |  |  | 633,211 |  |  | 1,093,486 |
Accumulated impairment losses | (137,204 | ) |  | (13,638 | ) |  | (633,211 | ) |  | (784,053 | )
Balance as of March 31, 2018 | $ | 281,101 |  |  | $ | 28,332 |  |  | $ | — |  |  | $ | 309,433 |
The components of intangible assets | The components of our other intangible assets were as follows:
| Estimated Useful Life (in years) |  | March 31, 2018 | June 30, 2017
(in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  |  | Gross Carrying Amount |  | Accumulated Amortization
Contract-based | 3 to 15 |  | $ | 7,066 |  |  | $ | (7,036 | ) |  |  | $ | 7,064 |  |  | $ | (7,014 | )
Technology-based and other | 4 to 20 |  | 47,357 |  |  | (31,244 | ) |  |  | 46,461 |  |  | (29,061 | )
Customer-related | 10 to 21 |  | 208,107 |  |  | (84,114 | ) |  |  | 205,502 |  |  | (74,669 | )
Unpatented technology | 10 to 30 |  | 32,071 |  |  | (12,566 | ) |  |  | 31,754 |  |  | (10,589 | )
Trademarks | 5 to 20 |  | 12,600 |  |  | (9,052 | ) |  |  | 12,401 |  |  | (8,648 | )
Trademarks | Indefinite |  | 18,487 |  |  | — |  |  |  | 17,326 |  |  | — |
Total |  |  | $ | 325,688 |  |  | $ | (144,012 | ) |  |  | $ | 320,508 |  |  | $ | (129,981 | )

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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