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Goodwill and Intangible Assets, Net (Tables) | 3 Months Ended
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Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Changes in the carrying amount of goodwill were as follows:
(In thousands) |
Balance at December 31, 2015 | $ | 43,116 |
Foreign exchange effects | 68 |
Balance at March 31, 2016 | $ | 43,184 |
Schedule of Components of Intangible Assets | The components of intangible assets, net were as follows:
| March 31, 2016 |  | December 31, 2015
(In thousands) | Gross (1) |  | Accumulated Amortization (1) |  | Net |  | Gross (1) |  | Accumulated Amortization (1) |  | Net
Distribution rights | $ | 327 |  |  | $ | (107 | ) |  | $ | 220 |  |  | $ | 312 |  |  | $ | (96 | ) |  | $ | 216 |
Patents | 11,468 |  |  | (4,580 | ) |  | 6,888 |  |  | 11,425 |  |  | (4,737 | ) |  | 6,688 |
Trademarks and trade names | 2,400 |  |  | (1,117 | ) |  | 1,283 |  |  | 2,401 |  |  | (1,053 | ) |  | 1,348 |
Developed and core technology | 12,585 |  |  | (2,611 | ) |  | 9,974 |  |  | 12,587 |  |  | (2,144 | ) |  | 10,443 |
Capitalized software development costs | 235 |  |  | (118 | ) |  | 117 |  |  | 167 |  |  | (97 | ) |  | 70 |
Customer relationships | 27,697 |  |  | (14,244 | ) |  | 13,453 |  |  | 27,715 |  |  | (13,554 | ) |  | 14,161 |
Total intangible assets, net | $ | 54,712 |  |  | $ | (22,777 | ) |  | $ | 31,935 |  |  | $ | 54,607 |  |  | $ | (21,681 | ) |  | $ | 32,926 |
(1) | This table excludes the gross value of fully amortized intangible assets totaling $9.4 million and $9.0 million at March 31, 2016 and December 31, 2015, respectively.
Intangible Assets Amortization Expense | Amortization expense by income statement caption was as follows:
| Three Months Ended March 31,
(In thousands) | 2016 |  | 2015
Cost of sales | $ | 21 |  |  | $ | 35 |
Selling, general and administrative expenses | 1,533 |  |  | 1,004 |
Total amortization expense | $ | 1,554 |  |  | $ | 1,039 |
Schedule of Estimated Future Amortization Expense | Estimated future annual amortization expense related to our intangible assets at March 31, 2016, is as follows:
(In thousands) |
2016 (remaining 9 months) | $ | 4,778 |
2017 | 6,303 |
2018 | 6,250 |
2019 | 6,235 |
2020 | 5,495 |
Thereafter | 2,874 |
Total | $ | 31,935 |

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