INCOME TAXES (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Asset:
Net operating loss carryforward	$ 51,449	$ 46,051
Research and development credit carryforwards	918	918
Other	585	539
Deferred Tax Assets, Gross	52,952	47,508
Less valuation allowance	(52,902)	(47,406)
Deferred Tax Asset	50	102
Deferred Tax Liability:
Property and equipment	50	102
Deferred Tax Liability	50	102
Net Deferred Asset (Liability)	$ 0	$ 0