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Goodwill and Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
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, 2019 and 2020, were as follows, respectively:
(in thousands) | North America |  | Europe |  | Asia Pacific |  | Total
Balance as of January 1, 2019 | $ | 96,435 |  |  | $ | 32,471 |  |  | $ | 1,344 |  |  | $ | 130,250 |
Goodwill acquired | — |  |  | 1,815 |  |  | — |  |  | 1,815 |
Foreign exchange | 129 |  |  | 14 |  |  | (9) |  |  | 134 |
Reclassifications (1) | (320) |  |  | — |  | — |  | (320) |
Balance as of December 31, 2019 | 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 |
(1) Reclassifications during 2019 for an acquisition included the recognition of $481 thousand in non-compete agreements, trademarks and other, with a corresponding reductions of $320 thousand in goodwill and $161 thousand in other assets. |
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, 2020 and 2019 were as follows:
(in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Patents |  |
Balance at January 1, 2019 | $ | 2,109 |  |  | $ | (411) |  |  | $ | 1,698 |
Purchases of intangibles | 2,550 |  |  | — |  |  | 2,550 |
Amortization | — |  |  | (150) |  |  | (150) |
Balance at December 31, 2019 | 4,659 |  |  | (561) |  |  | 4,098 |
Purchases of intangible assets | 40 |  |  | — |  |  | 40 |
Amortization | — |  |  | (373) |  |  | (373) |
Balance at December 31, 2020 | $ | 4,699 |  |  | $ | (934) |  |  | $ | 3,765 |
(in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Unpatented Technology |  |
Balance at January 1, 2019 | $ | 20,662 |  |  | $ | (12,344) |  |  | $ | 8,318 |
Amortization | — |  |  | (2,017) |  |  | (2,017) |
Assets acquisitions, net of cash acquired | 788 |  |  | — |  |  | 788 |
Foreign exchange | 166 |  |  | — |  |  | 166 |
Balance at December 31, 2019 | 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 |
(in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Non-Compete Agreements, Trademarks and Other |  |
Balance at January 1, 2019 | $ | 12,225 |  |  | $ | (3,719) |  |  | $ | 8,506 |
Purchases of intangibles assets - other | 2,081 |  |  | — |  |  | 2,081 |
Assets acquisitions, net of cash acquired | 6 |  |  | — |  |  | 6 |
Amortization | — |  |  | (1,910) |  |  | (1,910) |
Foreign exchange | 10 |  |  | — |  |  | 10 |
Reclassifications(1) | 481 |  |  | — |  |  | 481 |
Removal of fully amortized assets | (100) |  |  | 100 |  |  | — |
Balance at December 31, 2019 | 14,703 |  |  | (5,529) |  |  | 9,174 |
Purchases of intangible assets - licenses | 6,700 |  |  |  |  | 6,700 |
Amortization | — |  |  | (2,195) |  |  | (2,195) |
Foreign exchange | 179 |  |  | — |  |  | 179 |
Balance at December 31, 2020 | $ | 21,582 |  |  | $ | (7,724) |  |  | $ | 13,858 |
(1)Reclassifications during 2019 for an acquisition included $481 thousand recognized for non-compete agreements, trademarks and other, with a corresponding reductions of $320 thousand in goodwill and $161 thousand in other assets.
(in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer Relationships |  |
Balance at January 1, 2019 | $ | 17,563 |  |  | $ | (12,299) |  |  | $ | 5,264 |
Acquisition | 124 |  |  | — |  |  | 124 |
Amortization | — |  |  | (1,433) |  |  | (1,433) |
Foreign exchange | (27) |  |  | — |  |  | (27) |
Balance at December 31, 2019 | 17,660 |  |  | (13,732) |  |  | 3,928 |
Purchases of intangible assets | 290 |  |  | — |  |  | 290 |
Amortization | — |  |  | (1,443) |  |  | (1,443) |
Foreign exchange | 173 |  |  | — |  |  | 173 |
Balance at December 31, 2020 | $ | 18,123 |  |  | $ | (15,175) |  |  | $ | 2,948 |
Schedule of estimated future amortization of intangible assets | At December 31, 2020, estimated future amortization of intangible assets was as follows: (in thousands)
2021 | $ | 6,304 |
2022 | 4,205 |
2023 | 3,339 |
2024 | 2,290 |
2025 | 2,022 |
Thereafter | 8,024 |
| $ | 26,184 |
Schedule of finite-lived intangible assets | Definite-lived and indefinite-lived assets, net, by segment as of December 31, 2020 and 2019 were as follows:
| December 31, 2019
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
(in thousands) |  |
Total Intangible Assets |  |
North America | $ | 33,756 |  |  | $ | (19,173) |  |  | $ | 14,583 |
Europe | 25,500 |  |  | (15,012) |  |  | 10,488 |
Total | $ | 59,256 |  |  | $ | (34,185) |  |  | $ | 25,071 |
| At 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 |

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