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Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2017
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 December 31, 2016 to March 31, 2017, were as follows:
As of March 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 |  |  | $43 |  |  | $24 |  |  | $19 |
AEC technology |  | 15 |  |  | 228 |  |  | 130 |  |  | 98 |
Customer relationships |  | 15 |  |  | 49,490 |  |  | 3,306 |  |  | 46,184 |
Customer contracts |  | 6 |  |  | 20,420 |  |  | 3,412 |  |  | 17,008 |
Other intangibles |  | 5 |  |  | 1,720 |  |  | 344 |  |  | 1,376 |
Total amortized intangible assets |  |  |  |  | $71,901 |  |  | $7,216 |  |  | $64,685 |
Unamortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
MC Goodwill |  |  |  |  | $65,359 |  |  | $- |  |  | $65,359 |
AEC Goodwill |  |  |  |  | 95,730 |  |  | - |  |  | 95,730 |
Total unamortized intangible assets: |  |  |  |  | $161,089 |  |  | $- |  |  | $161,089 |
As of December 31, 2016 (in thousands) |  | Weighted average amortization life in years |  | Gross carrying amount |  | Accumulated amortization |  | Net carrying amount
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
AEC trade names |  | 15 |  |  | $43 |  |  | $23 |  |  | $20 |
AEC technology |  | 15 |  |  | 228 |  |  | 124 |  |  | 104 |
Customer relationships |  | 15 |  |  | 49,490 |  |  | 2,481 |  |  | 47,009 |
Customer contracts |  | 6 |  |  | 20,420 |  |  | 2,561 |  |  | 17,859 |
Other intangibles |  | 5 |  |  | 1,720 |  |  | 258 |  |  | 1,462 |
Total amortized intangible assets |  |  |  |  | $71,901 |  |  | $5,447 |  |  | $66,454 |
Unamortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
MC Goodwill |  |  |  |  | $64,645 |  |  | $- |  |  | $64,645 |
AEC Goodwill |  |  |  |  | 95,730 |  |  | - |  |  | 95,730 |
Total unamortized intangible assets: |  |  |  |  | $160,375 |  |  | $- |  |  | $160,375 |
The changes in intangibles, net and goodwill from December 31, 2016 to March 31, 2017, were as follows:
(in thousands) |  | December 31, 2016 |  | Amortization |  | Currency Translation |  | March 31, 2017
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
AEC trade names |  | $20 |  |  | $(1 | ) |  | $- |  |  | $19 |
AEC technology |  | 104 |  |  | (6 | ) |  | - |  |  | 98 |
Customer relationships |  | 47,009 |  |  | (825 | ) |  | - |  |  | 46,184 |
Customer contracts |  | 17,859 |  |  | (851 | ) |  | - |  |  | 17,008 |
Other intangibles |  | 1,462 |  |  | (86 | ) |  | - |  |  | 1,376 |
Net amortized intangible assets |  | $66,454 |  |  | ($1,769 | ) |  | $- |  |  | $64,685 |
Unamortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
MC Goodwill |  | $64,645 |  |  | $- |  |  | $714 |  |  | $65,359 |
AEC Goodwill |  | 95,730 |  |  | - |  |  | - |  |  | 95,730 |
Total unamortized intangible assets: |  | $160,375 |  |  | $- |  |  | $714 |  |  | $161,089 |
Schedule of Estimated Amortization Expense | Estimated amortization expense of intangibles for the years ending December 31, 2017 through 2021, is as follows:
| Annual amortization
Year | (in thousands)
2017 | $7,076
2018 | 7,076
2019 | 7,076
2020 | 7,076
2021 | 6,796

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