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Goodwill and Intangible Assets, Net (Tables) | 3 Months Ended
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Mar. 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, 2021 | $ | 48,463 |
Goodwill acquired during the period (1) | 713 |
Foreign exchange effects | (24) |
Balance at March 31, 2022 | $ | 49,152 |
(1) During the first quarter of 2022, we recognized $0.7 million of goodwill related to the Qterics, Inc. ("Qterics") acquisition. Refer to Note 19 for further information about this acquisition.
Components of Intangible Assets, Net | The components of intangible assets, net were as follows:
| March 31, 2022 |  | December 31, 2021
(In thousands) | Gross (1) |  | Accumulated Amortization (1) |  | Net |  | Gross (1) |  | Accumulated Amortization (1) |  | Net
Capitalized software development costs | $ | 1,172 |  |  | $ | (40) |  |  | $ | 1,132 |  |  | $ | 1,066 |  |  | $ | (27) |  |  | $ | 1,039 |
Customer relationships | 6,340 |  |  | (2,537) |  |  | 3,803 |  |  | 5,000 |  |  | (2,375) |  |  | 2,625 |
Developed and core technology | 4,520 |  |  | (3,420) |  |  | 1,100 |  |  | 4,080 |  |  | (3,335) |  |  | 745 |
Distribution rights | 320 |  |  | (271) |  |  | 49 |  |  | 325 |  |  | (269) |  |  | 56 |
Patents | 25,600 |  |  | (9,431) |  |  | 16,169 |  |  | 24,518 |  |  | (9,015) |  |  | 15,503 |
Trademarks and trade names | 850 |  |  | (628) |  |  | 222 |  |  | 800 |  |  | (599) |  |  | 201 |
Total intangible assets, net | $ | 38,802 |  |  | $ | (16,327) |  |  | $ | 22,475 |  |  | $ | 35,789 |  |  | $ | (15,620) |  |  | $ | 20,169 |
(1)This table excludes the gross value of fully amortized intangible assets totaling $43.4 million and $43.2 million at March 31, 2022 and December 31, 2021, respectively.
Finite-lived Intangible Assets Amortization Expense | Amortization expense by statement of operations caption was as follows:
(In thousands) | Three Months Ended March 31, |  |
2022 |  | 2021 |  |  |  |
Cost of sales | $ | 12 |  |  | $ | 4 |  |  |  |  |
Selling, general and administrative expenses | 921 |  |  | 834 |  |  |  |  |
Total amortization expense | $ | 933 |  |  | $ | 838 |  |  |  |  |
Estimated Future Amortization Expense Related to Intangible Assets | Estimated future annual amortization expense related to our intangible assets at March 31, 2022, was as follows:
(In thousands) |
2022 (remaining 9 months) | $ | 3,035 |
2023 | 4,085 |
2024 | 3,484 |
2025 | 2,953 |
2026 | 2,741 |
Thereafter | 6,177 |
Total | $ | 22,475 |

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