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GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Amortized intangible assets |  |  |  |  |
Gross Carrying Amount | $ 458,479 |  | $ 458,479 |  | $ 466,741
Accumulated Amortization | (136,464) |  | (136,464) |  | (122,432)
Net Value | 322,015 |  | 322,015 |  | 344,309
Aggregate amortization expense | 9,811 | $ 12,320 | $ 19,622 | $ 20,334 |
Weighted Average |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Amortization Period (in years) |  |  | 13 years 4 months 24 days |  |
Patents |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Gross Carrying Amount | 2,822 |  | $ 2,822 |  | 2,861
Accumulated Amortization | (1,465) |  | (1,465) |  | (1,477)
Net Value | 1,357 |  | $ 1,357 |  | 1,384
Patents | Weighted Average |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Amortization Period (in years) |  |  | 13 years 9 months 18 days |  |
Acquired technology |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Gross Carrying Amount | 110,171 |  | $ 110,171 |  | 111,854
Accumulated Amortization | (41,264) |  | (41,264) |  | (36,943)
Net Value | 68,907 |  | $ 68,907 |  | 74,911
Acquired technology | Weighted Average |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Amortization Period (in years) |  |  | 12 years 2 months 12 days |  |
Customer relationships |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Gross Carrying Amount | 284,613 |  | $ 284,613 |  | 286,644
Accumulated Amortization | (67,039) |  | (67,039) |  | (56,714)
Net Value | 217,574 |  | $ 217,574 |  | 229,930
Customer relationships | Weighted Average |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Amortization Period (in years) |  |  | 13 years 6 months |  |
Trademarks and trade names |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Gross Carrying Amount | 45,653 |  | $ 45,653 |  | 46,174
Accumulated Amortization | (20,286) |  | (20,286) |  | (17,437)
Net Value | 25,367 |  | $ 25,367 |  | 28,737
Trademarks and trade names | Weighted Average |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Amortization Period (in years) |  |  | 6 years 9 months 18 days |  |
License agreements and other |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Gross Carrying Amount | 15,220 |  | $ 15,220 |  | 19,208
Accumulated Amortization | (6,410) |  | (6,410) |  | (9,861)
Net Value | $ 8,810 |  | $ 8,810 |  | $ 9,347
License agreements and other | Weighted Average |  |  |  |  |
Amortized intangible assets |  |  |  |  |
Amortization Period (in years) |  |  | 38 years 3 months 18 days |  |

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