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Balance Sheet Account Details - Goodwill and Other Intangible Assets (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | $ 189,662,000 | $ 95,229,000 |
Total goodwill and other identifiable intangible assets, net | $ 784,992,000 | 305,677,000 |
Finite-lived intangible asset, useful life | 20 years |  |
Amortization expense | $ 23,400,000 | 16,900,000 | $ 15,800,000
Estimated amortization expense for 2021 | 47,100,000 |  |
Estimated amortization expense for 2022 | 47,100,000 |  |
Estimated amortization expense for 2023 | 47,100,000 |  |
Estimated amortization expense for 2024 | 47,100,000 |  |
Impairment of intangible assets with finite lives | 0 | 0 | $ 0
Complete technology |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Definite-lived intangible assets | 277,740,000 | 242,813,000 |
Less: Accumulated amortization | (63,600,000) | (50,203,000) |
Trade name |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Definite-lived intangible assets | 2,642,000 | 2,642,000 |
Less: Accumulated amortization | (1,312,000) | (1,180,000) |
Customer relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Definite-lived intangible assets | 40,700,000 | 29,600,000 |
Less: Accumulated amortization | (15,597,000) | (13,224,000) |
Contractual relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Definite-lived intangible assets | 362,000,000 |  |
Less: Accumulated amortization | $ (7,243,000) | $ 0 |

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