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Organization and Summary of Significant Accounting Policies (Impact of Adoption of Topic 606 and Topic 842 on the Condensed Consolidated Balance Sheet) (Details) - USD ($) $ in Thousands | Dec. 28, 2018 | Dec. 30, 2017 | Dec. 29, 2017
--- | --- | --- | ---
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Contract assets: unbilled collaboration revenue, gross: Current portion | $ 0 | $ 9,588 |
Contract assets: unbilled collaboration revenue, gross: Long-term portion | 0 | 12,247 |
Other receivables | 162,771 | 11,635 | $ 77,300
Property and equipment, net | 50,897 | 11,213 | 25,743
Operating lease right-of-use assets | 5,867 | 8,579 | 0
Current portion of deferred revenue | 0 | 8,393 | 31,984
Long-term portion of deferred revenue | 15,897 | 25,441 | 238,520
Other current liabilities | 21,825 | 19,323 | 16,150
Long-term portion of lease liabilities | 14,965 | 13,323 |
Accumulated deficit | $ (880,363) | (1,570,433) | (1,829,172)
Calculated under Revenue Guidance in Effect before Topic 606 [Member] |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Contract assets: unbilled collaboration revenue, gross: Current portion |  |  | 0
Contract assets: unbilled collaboration revenue, gross: Long-term portion |  |  | 0
Other receivables |  |  | 3,892
Property and equipment, net |  |  | 25,743
Operating lease right-of-use assets |  |  | 0
Current portion of deferred revenue |  |  | 31,984
Long-term portion of deferred revenue |  |  | 238,520
Other current liabilities |  |  | 16,150
Long-term portion of lease liabilities |  |  | 14,938
Accumulated deficit |  |  | $ (1,829,172)
ASU 2014-09 | Adjustments Due to the Adoption of Topic 606 |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Contract assets: unbilled collaboration revenue, gross: Current portion |  | 9,588 |
Contract assets: unbilled collaboration revenue, gross: Long-term portion |  | 12,247 |
Current portion of deferred revenue |  | (23,591) |
Long-term portion of deferred revenue |  | (213,079) |
Accumulated deficit |  | 258,505 |
Restatement | ASU 2016-02 |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Other receivables |  | 7,743 |
Property and equipment, net |  | (14,530) |
Operating lease right-of-use assets |  | 8,579 |
Other current liabilities |  | 3,173 |
Long-term portion of lease liabilities |  | (1,615) |
Accumulated deficit |  | $ 234 |

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