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INVESTMENTS AND FAIR VALUE MEASUREMENTS - Narrative (Details) $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 18 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2024 USD ($) | Jun. 24, 2024 USD ($) | Apr. 30, 2019 | Sep. 29, 2024 USD ($) day | Oct. 01, 2023 USD ($) | Sep. 29, 2024 USD ($) day fund | Oct. 01, 2023 USD ($) | Oct. 01, 2023 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Short-term investments |  |  |  | $ 70,000 |  | $ 70,000 |  |  |  | $ 6,000
Strategic equity investments, without readily determinable fair values |  |  |  | 27,000 |  | 27,000 |  |  |  | 28,000
Total revenue |  |  |  | $ 1,080,000 | $ 1,119,000 | $ 3,268,000 | $ 3,382,000 |  |  |
Contingent consideration asset settlement | $ 83,000 |  |  |  |  |  |  |  |  |
GRAIL |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Contingent value right, terms |  |  |  |  |  | 12 years |  |  |  |
Covered revenues of GRAIL, contingent consideration liability |  |  |  |  |  |  |  | $ 65,000 | $ 89,000 |
Payment for contingent consideration |  |  |  |  |  | $ 836 | 609 |  |  |
GRAIL | Payment Rights Of One Billion, Each Twelve Years |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Contingent payment rights |  |  |  | 2.50% |  | 2.50% |  |  |  |
Business acquisition, contingent value rights, revenue threshold |  |  |  |  |  | $ 1,000,000 |  |  |  |
GRAIL | Payment Rights Of Above One Billion, Each Twelve Years |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Business acquisition, contingent value rights, revenue threshold |  |  |  |  |  | $ 1,000,000 |  |  |  |
Contingent payment rights, second percentage |  |  |  | 9.00% |  | 9.00% |  |  |  |
Helix Holdings I, LLC |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Contingent value right, terms |  |  | 7 years |  |  |  |  |  |  |
Investee |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  | $ 7,000 | 2,000 | $ 13,000 | 68,000 |  |  |
Venture Capital Investment Fund (the Fund) |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Number of venture capital investment funds | fund |  |  |  |  |  | 3 |  |  |  |
Amount of GRAIL net assets recorded to short-term investments |  |  |  | 191,000 |  | $ 191,000 |  |  |  | 168,000
Unrealized (loss) gain on investments |  |  |  | $ (6,000) | $ (19,000) | $ (3,000) | $ (33,000) |  |  |
GRAIL | Revenue Risk Premium |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Revenue risk premium |  |  |  | 0.18 |  | 0.18 |  |  |  |
GRAIL | Calculation Trailing Period |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Revenue risk premium | day |  |  |  | 60 |  | 60 |  |  |  |
Spinoff | GRAIL |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
GRAIL net assets |  | $ 2,738,000 |  |  |  |  |  |  |  |
Discontinued operation, equity method investment retained after disposal, ownership interest after disposal |  | 14.50% |  |  |  |  |  |  |  |
Discontinued operation, gain (loss) on disposal of discontinued operation, net of tax |  |  |  |  |  | $ (332,000) |  |  |  |
Contingent consideration liability |  |  |  | $ 82,000 |  | 82,000 |  |  |  | 387,000
Contingent consideration, noncurrent |  |  |  | 81,000 |  | 81,000 |  |  |  | $ 385,000
Increase in 20% of revenue, increase in liability |  |  |  | 21,000 |  | 21,000 |  |  |  |
Decrease in 20% of revenue, decrease in liability |  |  |  | (20,000) |  | (20,000) |  |  |  |
Effect of change of additional 250 basis points, decrease in liability |  |  |  | (15,000) |  | (15,000) |  |  |  |
Effect of change of additional 250 basis points, increase in liability |  |  |  | $ 16,000 |  | $ 16,000 |  |  |  |
Short-Term Investments | Spinoff | GRAIL |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |
GRAIL net assets |  | $ 397,000 |  |  |  |  |  |  |  |

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