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- Definition

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+ References

No definition available.

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No definition available.

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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.

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Cash received from licensees for license fees during the current period.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Collaboration, License, Co-Promotion and Other Commercial Agreements - Japan (Details) $ in Thousands		1 Months Ended	3 Months Ended		12 Months Ended
	Aug. 01, 2019 USD ($)	Nov. 30, 2009 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) payment	Dec. 31, 2016 USD ($)
Collaboration, License and Co-Promotion Agreements
Revenue			$ 79,943	$ 68,730
Astellas Pharma Inc. \| Japan
Collaboration, License and Co-Promotion Agreements
Up-front fee received		$ 30,000
Astellas Pharma Inc. \| Japan \| Additional development milestones
Collaboration, License and Co-Promotion Agreements
Number of milestone payments \| payment					3
Total milestone payments to be received					$ 45,000
Collaborative arrangements revenue
Collaboration, License and Co-Promotion Agreements
Revenue			74,445	66,152
Collaborative arrangement, collaboration and license agreements \| Astellas Pharma Inc. \| Japan
Collaboration, License and Co-Promotion Agreements
Revenue			479
Revenue remaining performance obligation	$ 20,400
Non-refundable upfront payment	$ 10,000
Sale of active pharmaceutical ingredient
Collaboration, License and Co-Promotion Agreements
Revenue			5,498	2,578
Sale of active pharmaceutical ingredient \| Astellas Pharma Inc. \| Japan
Collaboration, License and Co-Promotion Agreements
Revenue				2,575
Revenue remaining performance obligation						$ 0
Sale of active pharmaceutical ingredient \| Astellas Pharma Inc., 2009 License Agreement \| Japan
Collaboration, License and Co-Promotion Agreements
Revenue				$ 2,600
Royalty \| Astellas Pharma Inc. \| Japan
Collaboration, License and Co-Promotion Agreements
Revenue			$ 400