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401(k) PLAN (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
InvestmentOptions
Dec. 31, 2015
USD ($)
401(k) PLAN [Abstract]    
Maximum annual contribution per employee under 401(k) plan $ 18,000 $ 18,000
Number of investment options | InvestmentOptions 50  
Company contributions under 401 (k) Plan $ 0 $ 0