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EMPLOYEE BENEFIT PLANS (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
EMPLOYEE BENEFIT PLANS        
Minimum age required to be eligible to participate in the 401(k) plan     21 years  
Expenses accrued relating to employer matching contributions $ 348 $ 318 $ 973 $ 1,029