LIABILITY RELATED TO SALE OF FUTURE ROYALTIES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013
Activity within the liability account
Proceeds from sale of future royalties	$ 240,500
Non-cash interest expense recognized	4,488
Less: current portion	(49,455)
Liability related to sale of future royalties, less current portion	177,624
Liability related to sale of future royalties
Activity within the liability account
Proceeds from sale of future royalties	240,500
Non-cash interest expense recognized	4,488
Payments from Depomed to PDL	17,909
Total liability related to sale of future royalties at the end of the period	227,079
Less: current portion	(49,455)
Liability related to sale of future royalties, less current portion	$ 177,624
Effective annual interest rate (as a percent)	10.00%

Carrying amount of liabilities related to the sale of future royalties.

No definition available.

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- Definition

Carrying amount of current liabilities related to the sale of future royalties due within one year or within the normal operating cycle, if longer.

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of noncurrent liabilities related to the sale of future royalties. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of effective annual interest rate.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of non-cash interest expense on liability related to sale of future royalties.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).Q1)

-URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A

+ Details

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Balance Type:	debit
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Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from disposal of asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

+ Details

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