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Goodwill and Intangible Assets, Net (Tables) | 9 Months Ended
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Sep. 30, 2017
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, 2016 | $ | 43,052 |
Goodwill acquired during the period (1) | 5,494 |
Foreign exchange effects | 78 |
Balance at September 30, 2017 | $ | 48,624 |
(1) During the second quarter of 2017, we recorded $5.5 million of goodwill related to the Residential Control Systems, Inc. acquisition. Refer to Note 18 for further information about this acquisition.
Schedule of Components of Intangible Assets | The components of intangible assets, net were as follows:
| September 30, 2017 |  | December 31, 2016
(In thousands) | Gross (1) |  | Accumulated Amortization (1) |  | Net |  | Gross (1) |  | Accumulated Amortization (1) |  | Net
Distribution rights | $ | 340 |  |  | $ | (155 | ) |  | $ | 185 |  |  | $ | 302 |  |  | $ | (119 | ) |  | $ | 183 |
Patents | 12,593 |  |  | (4,996 | ) |  | 7,597 |  |  | 12,038 |  |  | (4,775 | ) |  | 7,263 |
Trademarks and trade names (2) | 2,786 |  |  | (1,518 | ) |  | 1,268 |  |  | 2,400 |  |  | (1,310 | ) |  | 1,090 |
Developed and core technology | 12,560 |  |  | (5,567 | ) |  | 6,993 |  |  | 12,585 |  |  | (4,068 | ) |  | 8,517 |
Capitalized software development costs | 142 |  |  | (59 | ) |  | 83 |  |  | 142 |  |  | (5 | ) |  | 137 |
Customer relationships (2) | 32,534 |  |  | (18,613 | ) |  | 13,921 |  |  | 27,703 |  |  | (16,344 | ) |  | 11,359 |
Order backlog (2) | 150 |  |  | (38 | ) |  | 112 |  |  | — |  |  | — |  |  | — |
Total intangible assets, net | $ | 61,105 |  |  | $ | (30,946 | ) |  | $ | 30,159 |  |  | $ | 55,170 |  |  | $ | (26,621 | ) |  | $ | 28,549 |
(1) | This table excludes the gross value of fully amortized intangible assets totaling $6.0 million and $10.2 million at September 30, 2017 and December 31, 2016, respectively.
(2) | During the second quarter of 2017, we purchased a trade name valued at $0.4 million, which is being amortized ratably over eight years; customer relationships valued at $5.0 million, which are being amortized ratably over 10 years; and order backlog valued at $0.2 million, which is being amortized ratably over one year. Refer to Note 18 for further information regarding the purchase of these intangible assets.
Intangible Assets Amortization Expense | Amortization expense by income statement caption was as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(In thousands) | 2017 |  | 2016 |  | 2017 |  | 2016
Cost of sales | $ | 54 |  |  | $ | 21 |  |  | $ | 128 |  |  | $ | 63 |
Selling, general and administrative expenses | 1,715 |  |  | 1,551 |  |  | 5,032 |  |  | 4,618 |
Total amortization expense | $ | 1,769 |  |  | $ | 1,572 |  |  | $ | 5,160 |  |  | $ | 4,681 |
Schedule of Estimated Future Amortization Expense | Estimated future annual amortization expense related to our intangible assets at September 30, 2017, is as follows:
(In thousands) |
2017 (remaining 3 months) | $ | 1,776 |
2018 | 7,046 |
2019 | 6,901 |
2020 | 5,740 |
2021 | 2,289 |
Thereafter | 6,407 |
Total | $ | 30,159 |

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