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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
6 Months Ended
Jun. 30, 2014
Fair Value Disclosures [Abstract]  
Summary of Fair Value of Letters of Credit

The fair value of letters of credit at June 30, 2014 and December 31, 2013 follows:

 

     June 30, 2014      December 31, 2013  
     (in thousands)  

Letters of credit at fair value

   $ 5,263       $ 4,467