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GOODWILL AND OTHER INTANGIBLE ASSETS (Summary of Intangible Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Amortized intangible assets: |  |  |
Gross Carrying Amount | $ 466,741 | $ 372,417 |
Accumulated Amortization | (122,432) | (81,333) |
Net Value | 344,309 | 291,084 |
Aggregate amortization expense | $ 39,787 | 27,608 | $ 15,455
Weighted Average |  |  |
Amortized intangible assets: |  |  |
Weighted Average Amortization Period (Years) | 12 years 7 months 6 days |  |
Patents |  |  |
Amortized intangible assets: |  |  |
Gross Carrying Amount | $ 2,861 | 2,804 |
Accumulated Amortization | (1,477) | (1,318) |
Net Value | $ 1,384 | 1,486 |
Patents | Weighted Average |  |  |
Amortized intangible assets: |  |  |
Weighted Average Amortization Period (Years) | 7 years 2 months 12 days |  |
Acquired technology |  |  |
Amortized intangible assets: |  |  |
Gross Carrying Amount | $ 111,854 | 100,511 |
Accumulated Amortization | (36,943) | (25,430) |
Net Value | $ 74,911 | 75,081 |
Acquired technology | Weighted Average |  |  |
Amortized intangible assets: |  |  |
Weighted Average Amortization Period (Years) | 12 years 7 months 6 days |  |
Customer relationships |  |  |
Amortized intangible assets: |  |  |
Gross Carrying Amount | $ 286,644 | 217,934 |
Accumulated Amortization | (56,714) | (33,924) |
Net Value | $ 229,930 | 184,010 |
Customer relationships | Weighted Average |  |  |
Amortized intangible assets: |  |  |
Weighted Average Amortization Period (Years) | 13 years 3 months 18 days |  |
Trademarks and trade names |  |  |
Amortized intangible assets: |  |  |
Gross Carrying Amount | $ 46,174 | 35,015 |
Accumulated Amortization | (17,437) | (11,003) |
Net Value | $ 28,737 | 24,012 |
Trademarks and trade names | Weighted Average |  |  |
Amortized intangible assets: |  |  |
Weighted Average Amortization Period (Years) | 6 years 3 months 18 days |  |
License agreements and other |  |  |
Amortized intangible assets: |  |  |
Gross Carrying Amount | $ 19,208 | 16,153 |
Accumulated Amortization | (9,861) | (9,658) |
Net Value | $ 9,347 | $ 6,495 |
License agreements and other | Weighted Average |  |  |
Amortized intangible assets: |  |  |
Weighted Average Amortization Period (Years) | 19 years 3 months 18 days |  |

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