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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Goodwill | Changes in goodwill during the nine months ended September 30, 2018 are as follows:
(In thousands) | Goodwill
Balance at January 1, 2018 | $ | 422,185 |
Disposals | (525 | )
Currency translation | (4,881 | )
Balance at September 30, 2018 | $ | 416,779 |
Changes in Intangible Assets, Net of Accumulated Amortization | Changes in intangible assets, net of accumulated amortization during the nine months ended September 30, 2018, are as follows:
(In thousands) | Intangible Assets
Net balance at January 1, 2018 | $ | 183,088 |
Amortization expense | (7,916 | )
Currency translation | (1,855 | )
Net balance at September 30, 2018 | $ | 173,317 |

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