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Intangible Assets and Liabilities Gross Carrying Amount and Accumulated Amortization (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021 | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Intangible Assets [Line Items] |  |  |  |
Intangible assets, Accumulated (Amortization) Accretion | $ (828,086) | $ (835,893) |  |
Intangible assets, Net | 78,030 |  |  |
Intangible assets, Gross | 906,116 | 928,422 | $ 990,955 | $ 1,000,037
Intangible assets, Net | 78,030 | 92,529 |  |
Intangible liabilities, Gross | (23,900) | (23,900) | $ (23,900) | $ (23,900)
Intangible liabilities, Accumulated (Amortization) Accretion | 23,670 | 23,441 |  |
Intangible liabilities, Net | (230) | (459) |  |
Core-developed technology [Member] |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Intangible assets, Gross | 499,042 | 505,429 |  |
Intangible assets, Accumulated (Amortization) Accretion | (489,108) | (491,047) |  |
Intangible assets, Net | 9,934 | 14,382 |  |
Customer contracts and relationships [Member] |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Intangible assets, Gross | 322,882 | 336,421 |  |
Intangible assets, Accumulated (Amortization) Accretion | (257,302) | (261,043) |  |
Intangible assets, Net | 65,580 | 75,378 |  |
Trademarks and trade names [Member] |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Intangible assets, Gross | 72,175 | 74,551 |  |
Intangible assets, Accumulated (Amortization) Accretion | (69,938) | (72,133) |  |
Intangible assets, Net | 2,237 | 2,418 |  |
Other Intangible Assets [Member] |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Intangible assets, Gross | 12,017 | 12,021 |  |
Intangible assets, Accumulated (Amortization) Accretion | (11,738) | (11,670) |  |
Intangible assets, Net | $ 279 | $ 351 |  |

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