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SHARE-BASED COMPENSATION SHARE-BASED COMPENSATION (Stock Option Plan Activity) (Details) - Stock Option [Member] - $ / shares
shares in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Number of Shares Outstanding [Roll Forward]      
Beginning Balance, Outstanding Shares 2,172 2,152  
Granted, Shares     20
Ending Balance, Outstanding Shares 2,172 2,172 2,152
Exercisable, Shares 1,309    
Available for Grant, Shares 1,556    
Weighted Average Exercise Price [Roll Forward]      
Outstanding, Weighted Average Exercise Price ($ per Share) $ 5.02 $ 5.02  
Granted, Weighted Average Exercise Price ($ per Share)     $ 5.71
Outstanding, Weighted Average Exercise Price ($ per Share) 5.02 $ 5.02 $ 5.02
Exercisable, Weighted Average Exercise Price ($ per Share) $ 4.96    
Outstanding, Weighted Average Remaining Contractual Term 1 year 6 months 1 year 8 months 2 years 8 months
Exercisable, Weighted Average Remaining Contractual Term 1 year 6 months    
Weighted Average Grant Date Fair Value [Roll Forward]      
Outstanding, Weighted Average Grant Date Fair Value ($ per Share) $ 2.24 $ 2.24 $ 2.23
Granted, Weighted Average Grant Date Fair Value ($ per Share)     3.01
Outstanding, Weighted Average Grant Date Fair Value ($ per Share) 2.24 $ 2.24 $ 2.23
Exercisable, Weighted Average Grant Date Fair Value ($ per Share) $ 2.26