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Goodwill and Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in the Carrying Amount of Goodwill | Changes in the carrying amount of goodwill were as follows:
(In thousands) |
Balance at December 31, 2020 | $ | 48,614 |
Foreign exchange effects | (151) |
Balance at December 31, 2021 | 48,463 |
Goodwill acquired during the period (1) | 713 |
Foreign exchange effects | (91) |
Balance at December 31, 2022 | $ | 49,085 |
(1) During the year ended December 31, 2022, we recognized $0.7 million of goodwill related to the Qterics, Inc. ("Qterics") acquisition. Refer to Note 21 for further information about this acquisition.
Components of Intangible Assets | The components of intangible assets, net were as follows:
| December 31,
| 2022 |  | 2021
(In thousands) | Gross (1) |  | Accumulated Amortization (1) |  | Net (1) |  | Gross (1) |  | Accumulated Amortization (1) |  | Net (1)
Capitalized software development costs (2 years) | $ | 1,647 |  |  | $ | (44) |  |  | $ | 1,603 |  |  | $ | 1,066 |  |  | $ | (27) |  |  | $ | 1,039 |
Customer relationships (10-15 years) | 6,340 |  |  | (3,080) |  |  | 3,260 |  |  | 5,000 |  |  | (2,375) |  |  | 2,625 |
Developed and core technology (5-15 years) | 4,520 |  |  | (3,693) |  |  | 827 |  |  | 4,080 |  |  | (3,335) |  |  | 745 |
Distribution rights (10 years) | 308 |  |  | (281) |  |  | 27 |  |  | 325 |  |  | (269) |  |  | 56 |
Patents (10 years) | 29,388 |  |  | (10,790) |  |  | 18,598 |  |  | 24,518 |  |  | (9,015) |  |  | 15,503 |
Trademarks and trade names (10 years) | 450 |  |  | (295) |  |  | 155 |  |  | 800 |  |  | (599) |  |  | 201 |
Total intangible assets, net | $ | 42,653 |  |  | $ | (18,183) |  |  | $ | 24,470 |  |  | $ | 35,789 |  |  | $ | (15,620) |  |  | $ | 20,169 |
(1)This table excludes the gross value of fully amortized intangible assets totaling $43.7 million and $43.2 million on December 31, 2022 and 2021, respectively.
Amortization Expense by Income Statement Caption | Amortization expense by statement of operations caption was as follows:
| Year Ended December 31,
(In thousands) | 2022 |  | 2021 |  | 2020
Cost of sales | $ | 49 |  |  | $ | 27 |  |  | $ | — |
Selling, general and administrative expenses | 3,969 |  |  | 3,963 |  |  | 6,500 |
Total amortization expense | $ | 4,018 |  |  | $ | 3,990 |  |  | $ | 6,500 |
Estimated Future Amortization Expense Related to Intangible Assets | Estimated future annual amortization expense related to our intangible assets at December 31, 2022, is as follows:
(In thousands) |
2023 | $ | 4,821 |
2024 | 4,545 |
2025 | 3,705 |
2026 | 3,188 |
2027 | 2,596 |
Thereafter | 5,615 |
Total | $ | 24,470 |

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