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VENTURE CAPITAL AND OTHER INVESTMENTS - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 29, 2019 | Jun. 30, 2018 | Jun. 29, 2019 | Jun. 30, 2018 | Dec. 29, 2018
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Venture capital investments | $ 99,748 |  | $ 99,748 |  | $ 87,545
Committed contribution | 128,600 |  | 128,600 |  |
Amount funded for venture capital investments | 75,400 |  | 75,400 |  |
Dividends received | 900 | $ 1,500 | 1,600 | $ 8,500 |
Gains (losses) recognized from venture capital investments | (4,300) | $ 10,900 | 6,300 | $ 17,400 |
Other equity investments | $ 12,492 |  | $ 12,492 |  | $ 1,046
Minimum |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership percentage | 1.00% |  | 1.00% |  |
Maximum |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership percentage | 12.00% |  | 12.00% |  |

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