Goodwill and Intangibles Assets (Tables)
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9 Months Ended |
Sep. 30, 2016 |
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| Goodwill and Intangible Assets Disclosure [Abstract] |
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| Schedule of Goodwill [Table Text Block] |
The changes in the carrying amount of goodwill were as follows: | | | | | | Carrying Value | | (in thousands) | Balance as of January 1, 2016 | $ | 49,779 |
| Acquisition of wireless infrastructure access business | 6,935 |
| Acquisition of wireless infrastructure backhaul business | 19,080 |
| Balance as of September 30, 2016 | $ | 75,794 |
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| Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] |
The following table sets forth the Company’s finite-lived intangible assets resulting from business acquisitions and technology licenses purchased, which continue to be amortized: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2016 | | December 31, 2015 | | Weighted Average Useful Life (in Years) | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | | | (in thousands) | Licensed technology | 3 | | $ | 3,311 |
| | $ | (2,917 | ) | | $ | 394 |
| | $ | 2,921 |
| | $ | (2,725 | ) | | $ | 196 |
| Developed technology | 7 | | 74,700 |
| | (10,882 | ) | | 63,818 |
| | 47,000 |
| | (4,652 | ) | | 42,348 |
| Trademarks and trade names | 7 | | 1,700 |
| | (344 | ) | | 1,356 |
| | 1,700 |
| | (162 | ) | | 1,538 |
| Customer relationships | 3.7 | | 20,000 |
| | (3,036 | ) | | 16,964 |
| | 4,700 |
| | (627 | ) | | 4,073 |
| Covenants non-compete | 3 | | 900 |
| | (81 | ) | | 819 |
| | — |
| | — |
| | — |
| Backlog | 0.5 | | 26,600 |
| | (25,566 | ) | | 1,034 |
| | 24,200 |
| | (24,200 | ) | | — |
| | | | $ | 127,211 |
| | $ | (42,826 | ) | | $ | 84,385 |
| | $ | 80,521 |
| | $ | (32,366 | ) | | $ | 48,155 |
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| Schedule of Finite-Lived Intangible Assets [Table Text Block] |
The following table sets forth the activity during the nine months ended September 30, 2016 related to finite-lived intangible assets resulting from the acquisition of the wireless infrastructure access business, wireless infrastructure backhaul business, other additions and amortization of acquired finite-lived intangible assets: | | | | | | Carrying Amount | | (in thousands) | Balance as of December 31, 2015 | $ | 48,155 |
| Acquisition of wireless infrastructure access business | 12,300 |
| Acquisition of wireless infrastructure backhaul business | 34,000 |
| Other additions | 390 |
| Amortization | (10,460 | ) | Balance as of September 30, 2016 | $ | 84,385 |
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| Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
The following table presents future amortization of the Company’s finite-lived intangible assets at September 30, 2016: | | | | | | Amortization | | (in thousands) | 2016 (three months) | $ | 5,623 |
| 2017 | 18,360 |
| 2018 | 18,343 |
| 2019 | 12,042 |
| 2020 | 11,228 |
| 2021 | 10,850 |
| Thereafter | 7,939 |
| Total | $ | 84,385 |
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| Schedule of Indefinite-Lived Intangible Assets [Table Text Block] |
The following table sets forth the activity of the Company’s indefinite-lived intangible assets, which consists of in-process research and development technology: | | | | | | Gross Carrying Amount | | (in thousands) | Balance as of December 31, 2015 | $ | 3,200 |
| Acquisition of wireless infrastructure access business | 1,300 |
| Acquisition of wireless infrastructure backhaul business | 22,300 |
| IPR&D impairment losses (1) | (1,300 | ) | Balance as of September 30, 2016 | $ | 25,500 |
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