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Balance Sheet Components (Schedule of Intangibles, Net) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Intangible Assets [Line Items] |  |
Gross | $ 126,944 | $ 126,944
Accumulated Amortization | (125,088) | (123,045)
Net | 1,856 | 3,899
Technology |  |
Intangible Assets [Line Items] |  |
Gross | 59,799 | 59,799
Accumulated Amortization | (58,263) | (57,835)
Net | 1,536 | 1,964
Customer contracts and relationships |  |
Intangible Assets [Line Items] |  |
Gross | 56,800 | 56,800
Accumulated Amortization | (56,800) | (55,534)
Net | 0 | 1,266
Other |  |
Intangible Assets [Line Items] |  |
Gross | 10,345 | 10,345
Accumulated Amortization | (10,025) | (9,676)
Net | $ 320 | $ 669

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