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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- Definition

The amount of consideration recognized during the period for the milestone or milestones.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 28
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=6891994&loc=SL6892177-166501

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Represents the minimum age limit granted for market authorization as an adjunctive treatment of partial onset seizures, with or without secondary generalization in adults with epilepsy.

+ Details

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- Definition

Represents the maximum percentage of net profit shared on sales of the product.

+ Details

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Period Type:	instant

- Definition

Represents the maximum percentage of royalty payments associated with net commercial sales of the product.

+ Details

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- Definition

Represents the milestone payment made by the entity.

+ Details

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COLLABORATION AGREEMENT (Details) (Collaborations, USD $) In Millions, unless otherwise specified	1 Months Ended			6 Months Ended
	May 31, 2011 GlaxoSmithKline TrobaltTM	Jun. 30, 2011 GlaxoSmithKline TrobaltTM	Mar. 31, 2011 GlaxoSmithKline TrobaltTM	Jun. 30, 2011 GlaxoSmithKline PotigaTM	Jun. 30, 2011 Meda Pharma GmbH & Co. KG (Meda Pharma) PotigaTM
Collaboration Agreement
Minimum age limit for adjunctive treatment with epilepsy (in years)			18	18
GSK milestone payment	$ 40.0			$ 45.0
GSK milestone payment, maximum percentage of royalty on net sales of product (as a percent)		20.00%
GSK milestone payment, maximum percentage of net profits shared on sales of product (as a percent)				50.00%
Milestone payment made					$ 6.0