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FAIR VALUE MEASUREMENTS (Schedule Of Fair Value Measurements) (Details) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
FAIR VALUE MEASUREMENTS [Abstract]
Fair value of embedded derivatives	$ 6,864,000	$ 5,707,000
Fair value of Exchange Option within second research and development arrangement	4,756,000	569,000
Change in fair value of Exchange Option and embedded derivatives within research and development arrangements	(467,000)	588,000
Fair value of embedded derivatives	11,153,000	6,864,000
Cash consideration included in research and development funding arrangements	884,000	744,000
Fair value of liability with respect to outstanding options to non-employee	$ 0	$ 264,000

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- Definition

Cash consideration included in research and development funding arrangements.

+ References

No definition available.

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- Definition

The fair value of the liability with respect to outstanding options to non-employees.

+ References

No definition available.

+ Details

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- Definition

Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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- Definition

Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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