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Goodwill and Identified Intangible Assets | 9 Months Ended
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Sep. 28, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Identified Intangible Assets | GOODWILL AND IDENTIFIED INTANGIBLE ASSETS Goodwill Goodwill represents the difference between the purchase price and the estimated fair value of the identifiable assets acquired and liabilities assumed. Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. The Company has two reporting units, Video and Cable Access. The Company tests for goodwill impairment at the reporting unit level on an annual basis in the fiscal fourth quarter, or more frequently, if events or changes in circumstances indicate that the asset is more likely than not impaired. The Company performed its annual goodwill impairment review at the reporting unit level as of October 31, 2017, with no goodwill impairment indicated. There were no events or circumstances which triggered additional impairment reviews for the periods presented. The changes in the carrying amount of goodwill by reportable segments for the nine months ended September 28, 2018 were as follows (in thousands):
| Video |  | Cable Access |  | Total
Balance as of December 31, 2017 | $ | 182,012 |  |  | $ | 60,815 |  |  | $ | 242,827 |
Foreign currency translation adjustment | (1,297 | ) |  | (18 | ) |  | (1,315 | )
Balance as of September 28, 2018 | $ | 180,715 |  |  | $ | 60,797 |  |  | $ | 241,512 |
Intangible Assets, Net The following is a summary of intangible assets, net (in thousands):
|  |  | September 28, 2018 |  | December 31, 2017
| Weighted Average Remaining Life (Years) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Developed core technology | 1.4 |  | $ | 31,707 |  |  | $ | (24,281 | ) |  | $ | 7,426 |  |  | $ | 31,707 |  |  | $ | (20,396 | ) |  | $ | 11,311 |
Customer relationships/contracts | 2.4 |  | 44,718 |  |  | (37,431 | ) |  | 7,287 |  |  | 44,819 |  |  | (35,205 | ) |  | 9,614 |
Trademarks and trade names | 1.4 |  | 635 |  |  | (410 | ) |  | 225 |  |  | 654 |  |  | (300 | ) |  | 354 |
Maintenance agreements and related relationships | n/a |  | 5,500 |  |  | (5,500 | ) |  | — |  |  | 5,500 |  |  | (5,500 | ) |  | — |
Order Backlog | n/a |  | 3,138 |  |  | (3,138 | ) |  | — |  |  | 3,177 |  |  | (3,177 | ) |  | — |
Total identifiable intangibles |  |  | $ | 85,698 |  |  | $ | (70,760 | ) |  | $ | 14,938 |  |  | $ | 85,857 |  |  | $ | (64,578 | ) |  | $ | 21,279 |
Amortization expense for the identifiable purchased intangible assets for the three and nine months ended September 28, 2018 and September 29, 2017 was allocated as follows (in thousands):
| Three months ended | Nine months ended
| September 28, 2018 |  | September 29, 2017 | September 28, 2018 |  | September 29, 2017
Included in cost of revenue | $ | 1,295 |  |  | $ | 1,295 |  | $ | 3,885 |  |  | $ | 3,885 |
Included in operating expenses | 792 |  |  | 793 |  | 2,396 |  |  | 2,347 |
Total amortization expense | $ | 2,087 |  |  | $ | 2,088 |  | $ | 6,281 |  |  | $ | 6,232 |
The estimated future amortization expense of purchased intangible assets with definite lives is as follows (in thousands):
| Cost of Revenue |  | Operating Expenses |  | Total
Year ended December 31, |  |  |  |  |
2018 (remaining three months) | $ | 1,295 |  |  | $ | 794 |  |  | $ | 2,089 |
2019 | 5,180 |  |  | 3,174 |  |  | 8,354 |
2020 | 951 |  |  | 3,042 |  |  | 3,993 |
2021 | — |  |  | 502 |  |  | 502 |
Total future amortization expense | $ | 7,426 |  |  | $ | 7,512 |  |  | $ | 14,938 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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