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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Goodwill and Other Intangible Assets [Abstract] |
Goodwill Rollforward | The changes in the carrying amount of goodwill by segment for the years ended December 31, 2020 and 2019 were as follows:
|  | Optoelectronic Components |  |  | Resistors |  |  | Inductors |  |  | Total |
Balance at December 31, 2018 |  | $ | 96,849 |  |  | $ | 24,816 |  |  | $ | 25,815 |  |  | $ | 147,480 |
Bi-Metallix acquisition |  |  | - |  |  |  | 3,324 |  |  |  | - |  |  |  | 3,324 |
Exchange rate effects |  |  | - |  |  |  | (162 | ) |  |  | - |  |  |  | (162 | )
Balance at December 31, 2019 |  | $ | 96,849 |  |  | $ | 27,978 |  |  | $ | 25,815 |  |  | $ | 150,642 |
Applied Thin-Film Products acquisition |  |  | - |  |  |  | 6,548 |  |  |  | - |  |  |  | 6,548 |
Exchange rate effects |  |  | - |  |  |  | 993 |  |  |  | - |  |  |  | 993 |
Balance at December 31, 2020 |  | $ | 96,849 |  |  | $ | 35,519 |  |  | $ | 25,815 |  |  | $ | 158,183 |
Other Intangible Assets | Other intangible assets are as follows:
|  | December 31, 2020 |  |  | December 31, 2019 |
Intangible assets subject to amortization: |  |  |  |  |  |
Patents and acquired technology |  | $ | 21,259 |  |  | $ | 31,125 |
Capitalized software |  |  | 58,419 |  |  |  | 55,862 |
Customer relationships |  |  | 71,454 |  |  |  | 59,603 |
Tradenames |  |  | 23,105 |  |  |  | 22,510 |
|  |  | 174,237 |  |  |  | 169,100 |
Accumulated amortization: |  |  |  |  |  |  |  |
Patents and acquired technology |  |  | (14,340 | ) |  |  | (24,905 | )
Capitalized software |  |  | (52,990 | ) |  |  | (50,976 | )
Customer relationships |  |  | (28,659 | ) |  |  | (23,871 | )
Tradenames |  |  | (11,453 | ) |  |  | (8,689 | )
|  |  | (107,442 | ) |  |  | (108,441 | )
Net Intangible Assets Subject to Amortization |  | $ | 66,795 |  |  | $ | 60,659 |
Estimated Annual Amortization Expense for Each of the Next Five Years | Estimated annual amortization expense of intangible assets on the balance sheet at December 31, 2020 for each of the next five years is as follows:
2021 |  | $ | 7,920 |
2022 |  |  | 7,227 |
2023 |  |  | 6,992 |
2024 |  |  | 6,652 |
2025 |  |  | 6,384 |

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