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Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Dec. 31, 2016
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 | $ | 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 the six months ended December 31, 2016: |  |  |  |  |  |  |
Change in gross goodwill due to translation | (6,549 | ) |  | 14 |  |  | — |  |  | (6,535 | )
Gross goodwill | 402,156 |  |  | 40,638 |  |  | 633,211 |  |  | 1,076,005 |
Accumulated impairment losses | (137,204 | ) |  | (13,638 | ) |  | (633,211 | ) |  | (784,053 | )
Balance as of December 31, 2016 | $ | 264,952 |  |  | $ | 27,000 |  |  | $ | — |  |  | $ | 291,952 |
The components of intangible assets | The components of our other intangible assets were as follows:
| Estimated Useful Life (in years) |  | December 31, 2016 | June 30, 2016
(in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  |  | Gross Carrying Amount |  | Accumulated Amortization
Contract-based | 3 to 15 |  | $ | 7,058 |  |  | $ | (6,996 | ) |  |  | $ | 7,152 |  |  | $ | (6,886 | )
Technology-based and other | 4 to 20 |  | 45,914 |  |  | (27,152 | ) |  |  | 47,323 |  |  | (27,011 | )
Customer-related | 10 to 21 |  | 203,731 |  |  | (67,922 | ) |  |  | 205,471 |  |  | (66,938 | )
Unpatented technology | 10 to 30 |  | 31,659 |  |  | (9,363 | ) |  |  | 31,837 |  |  | (4,614 | )
Trademarks | 5 to 20 |  | 12,230 |  |  | (8,089 | ) |  |  | 12,668 |  |  | (8,644 | )
Trademarks | Indefinite |  | 16,197 |  |  | — |  |  |  | 16,850 |  |  | — |
Total |  |  | $ | 316,789 |  |  | $ | (119,522 | ) |  |  | $ | 321,301 |  |  | $ | (114,093 | )

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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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