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INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2013

INCOME TAXES

Schedule of significant components of the entity's deferred tax assets

		December 31,
		2013			2012
		(In thousands)
Net operating loss carryforwards		$	271,800		$	248,700
Purchased technology			6,300			20,000
Research credits			22,700			20,500
Capitalized research and development			6,600			19,400
License fees			700			1,100
Other—net			10,100			14,000
​	​	​	​	​	​	​	​
Total deferred tax assets			318,200			323,700
Valuation allowance for deferred tax assets			(318,200	)		(323,700	)
​	​	​	​	​	​	​	​
Net deferred tax assets		$	—		$	—
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​

Schedule of reconciliation of the beginning and ending amounts of unrecognized tax benefits

A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):

Balance as of December 31, 2012		$	10,500
Increase related to prior year tax positions			600
Increase related to current year tax positions			500
Settlements			—
Reductions due to lapse of applicable statute of limitations			—
​	​	​	​	​
Balance as of December 31, 2013		$	11,600
​	​	​	​	​
​	​	​	​	​

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- Definition

Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

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Tabular disclosure of the change in unrecognized tax benefits.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 55

-Paragraph 217

-URI http://asc.fasb.org/extlink&oid=32707879&loc=d3e36027-109320



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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