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Goodwill and Intangible Assets | 6 Months Ended
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Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Intangible Assets |
7. | Goodwill and Intangible Assets
The changes in the carrying value of Goodwill for the six months ended June 30, 2018 were as follows:
| Goodwill |  | Accumulated Impairment Losses |  | Total
Balance as of December 31, 2017 | $ | 227,224 |  |  | $ | (41,180 | ) |  | $ | 186,044 |
Purchase accounting adjustments | 4,627 |  |  | — |  |  | 4,627 |
Foreign currency fluctuations | (6,089 | ) |  | 1,133 |  |  | (4,956 | )
Balance as of June 30, 2018 | $ | 225,762 |  |  | $ | (40,047 | ) |  | $ | 185,715 |
The balances of acquired Intangible Assets, excluding Goodwill, as of June 30, 2018 and December 31, 2017, were as follows:
| Customer Lists |  | Trade Names |  | Technology |  | Total
Balance as of June 30, 2018 |  |  |  |  |  |  |
Original cost | $ | 145,455 |  |  | $ | 31,105 |  |  | $ | 15,554 |  |  | $ | 192,114 |
Accumulated amortization | (25,990 | ) |  | (3,894 | ) |  | (4,556 | ) |  | (34,440 | )
Carrying value | $ | 119,465 |  |  | $ | 27,211 |  |  | $ | 10,998 |  |  | $ | 157,674 |
Weighted average original life (in years) | 15 |  |  | 10 |  |  | 11 |  |  |  |
Balance as of December 31, 2017 |  |  |  |  |  |  |  |  |  |
Original cost | $ | 149,355 |  |  | $ | 31,968 |  |  | $ | 14,589 |  |  | $ | 195,912 |
Accumulated amortization | (17,870 | ) |  | (2,436 | ) |  | (3,259 | ) |  | (23,565 | )
Carrying value | $ | 131,485 |  |  | $ | 29,532 |  |  | $ | 11,330 |  |  | $ | 172,347 |
Weighted average original life (in years) | 15 |  |  | 10 |  |  | 11 |  |  |  |
The purchase accounting adjustments recorded during the first quarter of 2018 were based on the fair value adjustments related to our acquisition of the IPC Group, as described further in Note 5. During the first six months of 2018, we purchased a technology license for $1,000. The license was recorded in Intangible Assets, Net as technology on the Condensed Consolidated Balance Sheets as of June 30, 2018. Amortization expense on Intangible Assets for the three and six months ended June 30, 2018 was $5,819 and $11,657, respectively. Amortization expense on Intangible Assets for the three and six months ended June 30, 2017 was $3,536 and $3,780, respectively. Estimated aggregate amortization expense based on the current carrying value of amortizable Intangible Assets for each of the five succeeding years and thereafter is as follows:
Remaining 2018 | $ | 10,854 |
2019 | 21,206 |
2020 | 19,756 |
2021 | 18,165 |
2022 | 16,020 |
Thereafter | 71,673 |
Total | $ | 157,674 |

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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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