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STOCK-BASED COMPENSATION (Details 4) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Stock-Based Compensation Expense    
Total stock-based compensation expense $ 22 $ 62
Research and development    
Stock-Based Compensation Expense    
Total stock-based compensation expense 12 24
General and administrative    
Stock-Based Compensation Expense    
Total stock-based compensation expense $ 10 $ 38