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Collaboration Agreements (Collaboration Revenues - Genentech) (Details) - Genentech [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2017	Dec. 30, 2016	Jan. 01, 2016
Selling, general and administrative expense [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
U.S. (loss) net cost recovery under the collaboration agreement included in Selling, general and administrative expenses	$ (2,140)	$ 8,771	$ (16,600)
COTELLIC [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Royalty revenues on ex-U.S. sales of COTELLIC	$ 6,398	$ 2,827	$ 14

X

- Definition

Collaborative Arrangement, Income (Loss) from Agreement

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Definition

Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Details

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- Details

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- Details

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