FAIR VALUE DISCLOSURES (Details 2) (USD $) In Thousands	6 Months Ended
Jun. 30, 2011
Gemin X Pharmaceuticals \| Contingent consideration (liability)
Liabilities measured on a recurring basis using unobservable inputs (Level 3)
Net transfer in to Level 3 (new transactions)	$ (97,111)
Unrealized gains/(losses) included in earnings	(932)
Balance at the end of the period	(98,043)
Ception \| Contingent consideration (liability)
Liabilities measured on a recurring basis using unobservable inputs (Level 3)
Balance at the beginning of the period	(102,942)
Unrealized gains/(losses) included in earnings	(2,688)
Balance at the end of the period	(105,630)
BDC \| Contingent consideration (liability)
Liabilities measured on a recurring basis using unobservable inputs (Level 3)
Balance at the beginning of the period	(32,266)
Unrealized gains/(losses) included in earnings	(781)
Balance at the end of the period	(33,047)
ChemGenex Pharmaceuticals Limited \| Convertible note securities
Assets measured on a recurring basis using unobservable inputs (Level 3)
Balance at the beginning of the period	9,885
Unrealized gains/(losses) included in earnings	5,115
Conversion of Convertible Notes to Equity (Transfer Out)	(15,000)
Letter Agreement Derivative Instrument
Liabilities measured on a recurring basis using unobservable inputs (Level 3)
Unrealized gains/(losses) included in earnings	(22,078)
Balance at the end of the period	$ 22,078

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Transfers into liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period.

+ 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)(3)
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: 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=6925170&loc=d3e19207-110258

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- Definition

Transfers out of assets measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period.

+ References

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- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

+ References

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- Definition

This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ 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=6925170&loc=d3e19207-110258

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