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INTANGIBLE ASSETS, NET (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
INTANGIBLE ASSETS, NET |  |  |
Gross Carrying Amount | $ 40,636 | $ 42,628 |
Accumulated Amortization | (21,644) | (20,199) |
Total intangible assets, net | 18,992 | 22,429 |
Amortization expense | 4,601 | 5,122 | $ 5,310
Expected amortization expense of intangible assets |  |  |
2022 | 4,409 |  |
2023 | 3,228 |  |
2024 | 2,691 |  |
2025 | 2,198 |  |
2026 | 2,052 |  |
2026 and thereafter | 4,414 |  |
Technical know-how |  |  |
INTANGIBLE ASSETS, NET |  |  |
Gross Carrying Amount | 1,577 | 1,543 |
Accumulated Amortization | (1,562) | (1,525) |
Total intangible assets, net | 15 | 18 |
Computer software |  |  |
INTANGIBLE ASSETS, NET |  |  |
Gross Carrying Amount | 39,059 | 41,085 |
Accumulated Amortization | (20,082) | (18,674) |
Total intangible assets, net | $ 18,977 | $ 22,411 |

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