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Goodwill and Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Goodwill and changes in the carrying amount of goodwill were as follows:
(In thousands) |
Balance at December 31, 2014 | $ | 30,739 |
Goodwill acquired during the period (1) | 12,564 |
Foreign exchange effects | (187 | )
Balance at December 31, 2015 | 43,116 |
Foreign exchange effects | (64 | )
Balance at December 31, 2016 | $ | 43,052 |
(1) | During 2015, we recognized $12.6 million of goodwill related to the Ecolink Intelligent Technology, Inc. acquisition. Please refer to Note 22 for further information about this acquisition.
Schedule of Components of Intangible Assets | The components of intangible assets, net were as follows:
| December 31,
| 2016 |  | 2015
(In thousands) | Gross (1) |  | Accumulated Amortization (1) |  | Net (1) |  | Gross (1) |  | Accumulated Amortization (1) |  | Net (1)
Distribution rights (10 years) | $ | 302 |  |  | $ | (119 | ) |  | $ | 183 |  |  | $ | 312 |  |  | $ | (96 | ) |  | $ | 216 |
Patents (10 years) | 12,038 |  |  | (4,775 | ) |  | 7,263 |  |  | 11,425 |  |  | (4,737 | ) |  | 6,688 |
Trademarks and trade names (10 years) (2) | 2,400 |  |  | (1,310 | ) |  | 1,090 |  |  | 2,401 |  |  | (1,053 | ) |  | 1,348 |
Developed and core technology (5-15 years) (2) | 12,585 |  |  | (4,068 | ) |  | 8,517 |  |  | 12,587 |  |  | (2,144 | ) |  | 10,443 |
Capitalized software development costs (2 years) | 142 |  |  | (5 | ) |  | 137 |  |  | 167 |  |  | (97 | ) |  | 70 |
Customer relationships (10-15 years) (2) | 27,703 |  |  | (16,344 | ) |  | 11,359 |  |  | 27,715 |  |  | (13,554 | ) |  | 14,161 |
Total intangible assets, net | $ | 55,170 |  |  | $ | (26,621 | ) |  | $ | 28,549 |  |  | $ | 54,607 |  |  | $ | (21,681 | ) |  | $ | 32,926 |
(1) | This table excludes the gross value of fully amortized intangible assets totaling $10.2 million and $9.0 million on December 31, 2016 and 2015, respectively.
(2) | During the third quarter of 2015, we purchased a trade name valued at $0.4 million, which is being amortized ratably over seven years; developed technology valued at $9.1 million, which is being amortized over a weighted average period of approximately five years; and customer relationships valued at $1.3 million, which are being amortized ratably over five years. Refer to Note 22 for further information regarding our purchase of these intangible assets.
Intangible Assets Amortization Expense | Amortization expense by income statement caption was as follows:
| Year Ended December 31,
(In thousands) | 2016 |  | 2015 |  | 2014
Cost of sales | $ | 76 |  |  | $ | 123 |  |  | $ | 153 |
Selling, general and administrative | 6,198 |  |  | 4,719 |  |  | 4,009 |
Total amortization expense | $ | 6,274 |  |  | $ | 4,842 |  |  | $ | 4,162 |
Schedule of Estimated Future Amortization Expense | Estimated future amortization expense related to our intangible assets at December 31, 2016, is as follows:
(In thousands) |
2017 | $ | 6,415 |
2018 | 6,390 |
2019 | 6,312 |
2020 | 5,222 |
2021 | 2,932 |
Thereafter | 1,278 |
Total | $ | 28,549 |

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