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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 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 September 30, 2017, were as follows:
As of September 30, 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 | $27 |  | $16
AEC technology | 15 | 228 | 142 |  | 86
Customer relationships | 15 | 48,528 | 4,956 |  | 43,572
Customer contracts | 6 | 18,211 | 5,114 |  | 13,097
Other intangibles | 5 | 742 | 516 |  | 226
Total amortized intangible assets |  | $67,752 | $10,755 |  | $56,997
Unamortized intangible assets: |  |  |  |  |
MC Goodwill |  | $70,280 | $- |  | $70,280
AEC Goodwill |  | 95,730 | - |  | 95,730
Total unamortized intangible assets: |  | $166,010 | $- |  | $166,010
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 intangible assets and goodwill from December 31, 2016 to September 30, 2017, were as follows:
(in thousands) | December 31, 2016 | Amortization | Other Changes | Currency Translation | September 30, 2017
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |
AEC trade names | $20 |  | $(4 | ) | $- |  | $- |  | $16 |
AEC technology | 104 |  | (18 | ) | 0 |  | - |  | 86 |
Customer relationships | 47,009 |  | (2,475 | ) | (962 | ) | - |  | 43,572 |
Customer contracts | 17,859 |  | (2,553 | ) | (2,209 | ) | - |  | 13,097 |
Other intangibles | 1,462 |  | (258 | ) | (978 | ) | - |  | 226 |
Total amortized intangible assets | $66,454 |  | ($5,308 | ) | ($4,149 | ) | $- |  | $56,997 |
Unamortized intangible assets: |  |  |  |  |  |  |  |  |  |
MC Goodwill | $64,645 |  | $- |  |  |  | $5,635 |  | $70,280 |
AEC Goodwill | 95,730 |  | - |  |  |  | - |  | 95,730 |
Total unamortized intangible assets: | $160,375 |  | $- |  | $- |  | $5,635 |  | $166,010 |
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 | $6,865
2018 | 6,232
2019 | 6,232
2020 | 6,232
2021 | 6,162

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