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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |  |
Schedule of changes in the carrying amount of goodwill, by segment | The annual changes in the carrying amount of goodwill, by segment, as of December 31, 2020 and 2021, were as follows, respectively:
(in thousands) | North America |  | Europe |  | Asia Pacific |  | Total
Balance as of January 1, 2020 | $ | 96,244 |  |  | $ | 34,300 |  |  | $ | 1,335 |  |  | $ | 131,879 |
Goodwill acquired | — |  |  | 106 |  |  | — |  |  | 106 |
Foreign exchange | 67 |  |  | 3,661 |  |  | 139 |  |  | 3,867 |
Reclassifications | — |  |  | (8) |  |  | — |  | (8) |
Balance as of December 31, 2020 | 96,311 |  |  | 38,059 |  |  | 1,474 |  |  | 135,844 |
Foreign exchange | (4) |  |  | (1,622) |  |  | (90) |  |  | (1,716) |
Reclassifications | — |  |  | (106) |  |  | — |  |  | (106) |
Balance as of December 31, 2021 | $ | 96,307 |  |  | $ | 36,331 |  |  | $ | 1,384 |  |  | $ | 134,022 |
Schedule of changes in the carrying amounts of finite-lived intangible assets subject to amortization |  | The annual changes in the carrying amounts of patents, unpatented technologies, customer relationships and non-compete agreements and other intangible assets subject to amortization for the years ended December 31, 2021 and 2020 were as follows:
(in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Patents |  |
Balance at January 1, 2020 | $ | 4,659 |  |  | $ | (561) |  |  | $ | 4,098 |
Purchases | 40 |  |  | — |  |  | 40 |
Amortization | — |  |  | (373) |  |  | (373) |
Balance at December 31, 2020 | 4,699 |  |  | (934) |  |  | 3,765 |
Purchases | 6,074 |  |  | — |  |  | 6,074 |
Amortization | — |  |  | (428) |  |  | (428) |
Balance at December 31, 2021 | $ | 10,773 |  |  | $ | (1,362) |  |  | $ | 9,411 |
(in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Unpatented Technology |  |
Balance at January 1, 2020 | $ | 21,616 |  |  | $ | (14,361) |  |  | $ | 7,255 |
Amortization | — |  |  | (2,131) |  |  | (2,131) |
Foreign exchange | 488 |  |  | — |  |  | 488 |
Balance at December 31, 2020 | 22,104 |  |  | (16,492) |  |  | 5,612 |
Amortization | — |  |  | (2,174) |  |  | (2,174) |
Reclassifications | 348 |  |  | — |  |  | 348 |
Foreign exchange | (49) |  |  | — |  |  | (49) |
Balance at December 31, 2021 | $ | 22,403 |  |  | $ | (18,666) |  |  | $ | 3,737 |
(in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Non-Compete Agreements, Trademarks and Other |  |
Balance at January 1, 2020 | $ | 14,703 |  |  | $ | (5,529) |  |  | $ | 9,174 |
Purchases | 6,700 |  |  |  |  | 6,700 |
Amortization | — |  |  | (2,195) |  |  | (2,195) |
Foreign exchange | 179 |  |  | — |  |  | 179 |
Balance at December 31, 2020 | 21,582 |  |  | (7,724) |  |  | 13,858 |
Amortization | — |  |  | (2,631) |  |  | (2,631) |
Foreign exchange | (148) |  |  | — |  |  | (148) |
Balance at December 31, 2021 | $ | 21,434 |  |  | $ | (10,355) |  |  | $ | 11,079 |
(in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer Relationships |  |
Balance at January 1, 2020 | $ | 17,660 |  |  | $ | (13,732) |  |  | $ | 3,928 |
Acquisition | 290 |  |  | — |  |  | 290 |
Amortization | — |  |  | (1,443) |  |  | (1,443) |
Foreign exchange | 173 |  |  | — |  |  | 173 |
Balance at December 31, 2020 | 18,123 |  |  | (15,175) |  |  | 2,948 |
Disposal | (217) |  |  | — |  |  | (217) |
Amortization | — |  |  | (1,186) |  |  | (1,186) |
Foreign exchange | (117) |  |  | — |  |  | (117) |
Balance at December 31, 2021 | $ | 17,789 |  |  | $ | (16,361) |  |  | $ | 1,428 |
Schedule of estimated future amortization of intangible assets | December 31, 2021, estimated future amortization of intangible assets was as follows: (in thousands)
2022 | $ | 4,767 |
2023 | 3,807 |
2024 | 2,859 |
2025 | 2,612 |
2026 | 1,884 |
Thereafter | 9,724 |
| $ | 25,653 |
Schedule of finite-lived intangible assets | Definite-lived and indefinite-lived assets, net, by segment as of December 31, 2021 and 2020 were as follows:
| December 31, 2020
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
(in thousands) |  |
Total Intangible Assets |  |
North America | $ | 40,786 |  |  | $ | (22,697) |  |  | $ | 18,089 |
Europe | 26,341 |  |  | (17,630) |  |  | 8,711 |
Total | $ | 67,127 |  |  | $ | (40,327) |  |  | $ | 26,800 |
| At December 31, 2021
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
(in thousands) |  |
Total Intangible Assets |  |
North America | $ | 46,643 |  |  | $ | (26,346) |  |  | $ | 20,297 |
Europe | 26,371 |  |  | (20,399) |  |  | 5,972 |
Total | $ | 73,014 |  |  | $ | (46,745) |  |  | $ | 26,269 |

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