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Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Intangible Assets and Goodwill | The gross carrying value, accumulated amortization and net values of intangible assets and goodwill as of June 30, 2018 and December 31, 2017, were as follows:
As of June 30, 2018 (in thousands) | Weighted average amortization life in years | Gross carrying amount | Accumulated amortization | Net carrying amount
Amortized intangible assets: |  |  |  |
AEC trade names | 15 | $140 | ($127) | $13
AEC technology | 15 | 370 | (302) | 68
Customer relationships | 15 | 48,421 | (7,269) | 41,152
Customer contracts | 6 | 17,471 | (6,559) | 10,912
Other intangibles | 5 | 322 | (145) | 177
Net amortized intangible assets |  | $66,724 | ($14,402) | $52,322
Unamortized intangible assets: |  |  |  |
MC Goodwill |  | $69,744 | $- | $69,744
AEC Goodwill |  | 95,730 | - | 95,730
Total unamortized intangible assets: |  | $165,474 | $- | $165,474
As of December 31, 2017 (in thousands) | Weighted average amortization life in years | Gross carrying amount | Accumulated amortization | Net carrying amount
Amortized intangible assets: |  |  |  |
AEC trade names | 15 | $140 | ($125) | $15
AEC technology | 15 | 370 | (290) | 80
Customer relationships | 15 | 48,421 | (5,654) | 42,767
Customer contracts | 6 | 17,471 | (5,102) | 12,369
Other intangibles | 5 | 322 | (112) | 210
Net amortized intangible assets |  | $66,724 | ($11,283) | $55,441
Unamortized intangible assets: |  |  |  |
MC Goodwill |  | $71,066 | $- | $71,066
AEC Goodwill |  | 95,730 | - | 95,730
Total unamortized intangible assets: | $166,796 | $- | $166,796
The changes in intangible assets, net and goodwill from December 31, 2017 to June 30, 2018, were as follows:
(in thousands) | December 31, 2017 | Amortization | Currency Translation | June 30, 2018
Amortized intangible assets: |  |  |  |
AEC trade names | $15 | $(2) | $- | $13
AEC technology | 80 | (12) | - | 68
Customer relationships | 42,767 | (1,615) | - | 41,152
Customer contracts | 12,369 | (1,457) | - | 10,912
Other intangibles | 210 | (33) | - | 177
Net amortized intangible assets | $55,441 | ($3,119) | $- | $52,322
Unamortized intangible assets: |  |  |  |
MC Goodwill | $71,066 | $- | $(1,322) | $69,744
AEC Goodwill | 95,730 | - | - | 95,730
Total unamortized intangible assets: | $166,796 | $- | $(1,322) | $165,474
Schedule of Estimated Amortization Expense | Estimated amortization expense of intangibles for the years ending December 31, 2018 through 2022, is as follows:
| Annual amortization
Year | (in thousands)
2018 | $6,234
2019 | 6,234
2020 | 6,234
2021 | 6,163
2022 | 3,949

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