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Portion of consideration allocated to equity.

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Portion of consideration allocated to license and pre-clinical research and development.

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Clinical milestone earned during the period

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Date on which the Company entered into agreement.

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Initial fee received from collaboration or license agreement.

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Total potential regulatory milestones company could earn under agreement

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Amount by which purchase price exceeds fair value for common stock purchased by collaborator.

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Total consideration received under agreement.

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Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

+ 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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Cash received on stock transaction after deduction of issuance costs.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Collaboration and Other Agreements, Janssen Biotech, Inc. (Details) - Janssen Biotech, Inc. [Member] - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 31, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jul. 31, 2015
Collaboration and Other Agreements [Line Items]
Recognized revenue under agreement				$ 0.0
Janssen MGD011 Agreement [Member]
Collaboration and Other Agreements [Line Items]
Collaboration or other agreement date				December 2014
Sale of common stock (in shares)	1,923,077
Proceeds of stock sale	$ 75.0
Sale of common stock (in dollars per share)	$ 39.00
Premium received on stock purchase	$ 12.3
Total consideration	125.0
Amount allocated to equity	62.7
Amount allocated to license and R&D	62.3
Clinical milestone earned during period						$ 10.0
Recognized revenue under agreement		$ 0.0	$ 10.0		$ 72.3
Non-refundable upfront payment	50.0
Janssen MGD011 Agreement [Member] \| Maximum [Member]
Collaboration and Other Agreements [Line Items]
Additional Potential Development Milestone Payments Under Agreement		205.0		$ 205.0
Potential regulatory milestone payments under agreement		220.0		220.0
Potential sales milestone payments under agreement		150.0		$ 150.0
Janssen MGD015 Agreement [Member]
Collaboration and Other Agreements [Line Items]
Collaboration or other agreement date				May 2016
Recognized revenue under agreement				$ 75.0
Non-refundable upfront payment	$ 75.0
Janssen MGD015 Agreement [Member] \| Maximum [Member]
Collaboration and Other Agreements [Line Items]
Additional Potential Development Milestone Payments Under Agreement		100.0		100.0
Potential regulatory milestone payments under agreement		265.0		265.0
Potential sales milestone payments under agreement		$ 300.0		$ 300.0