INCOME TAXES (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Deferred income tax assets (liabilities):
Net operating loss carryforwards	$ 134,395,000	$ 132,994,000
Research and development credit carryforward	9,037,000	9,019,000
Equity investment	72,000	72,000
Other	4,361,000	3,665,000
Depreciation	4,000	64,000
Valuation allowance for deferred income tax assets	(147,869,000)	(145,814,000)
Net deferred income tax assets	$ 0	$ 0