INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2015

INCOME TAXES

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

	December 31,
	2015			2014
	(In thousands)
Net operating loss carryforwards	$	276,100		$	281,300
Research credits		25,000			23,400
Capitalized research and development		1,400			2,100
License fees		300			500
Other—net		9,800			7,600
Total deferred tax assets		312,600			314,900
Valuation allowance for deferred tax assets		(312,600	)		(314,900	)
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, 2014	$	17,100
Increase related to prior year tax positions		2,300
Increase related to current year tax positions		700
Settlements		—
Reductions due to lapse of applicable statute of limitations		—
Balance as of December 31, 2015	$	20,100