Collaborative Arrangement, Achievement Levels of Commercial Performance, Period

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Maximum amount eligible for development and regulatory milestones under collaborations agreement.

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- Definition

Maximum amount eligible for commercial milestones under collaborations agreement.

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- Definition

Percent of royalty on net sale.

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- Definition

Period Of Specific Sales Volume, Threshold

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- Definition

Research and Development Arrangement Performed for Others, Reimbursement for Costs Incurred, Percent

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- Definition

Royalty Tier

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- Definition

Upfront Payment(s)

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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.

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No definition available.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Collaboration Agreements - Takeda Collaboration (Details) - Collaborative Arrangement with Takeda - USD ($)		3 Months Ended
	Jan. 01, 2017	Mar. 30, 2018	Mar. 31, 2018
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Upfront payment(s)	$ 50,000,000
Maximum amount eligible for development and regulatory milestones		$ 95,000,000
Maximum pre-specified payments		$ 83,000,000
Sales volume period		6 years
Remaining performance obligation		$ 28,700,000
Net contract liability			$ 3,200,000
Global
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development arrangement performed for others, reimbursement for costs incurred, percent		20.00%
Japan
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development arrangement performed for others, reimbursement for costs incurred, percent		100.00%
Collaboration period to achieve specified levels of commercial performance		2 years
Initial
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Cumulative net sales		$ 300,000,000.0
Initial \| Minimum
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percent of royalty on net sale		15.00%
Initial \| Maximum
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percent of royalty on net sale		24.00%
Final \| Minimum
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percent of royalty on net sale		20.00%
Final \| Maximum
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percent of royalty on net sale		30.00%