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ACCRUED LIABILITIES (Tables)
 3 Months Ended
Mar. 31, 2014
ACCRUED LIABILITIES  
Schedule of accrued liabilities

Accrued liabilities are as follows (in thousands):

 
   March 31,
2014		   December 31,
2013		  

Customer advances and deposits:

              

External customers

   $ 1,467   $ 475  

Morgan Stanley Capital Group

     3,775     6,264  
           
​ ​ ​ ​ ​ ​ ​ ​

 

     5,242     6,739  

Accrued property taxes

     1,394     767  

Accrued environmental obligations

     1,881     1,966  

Interest payable

     173     163  

Rebate due to Morgan Stanley Capital Group

     831     3,793  

Accrued expenses and other

     2,194     2,761  
           
​ ​ ​ ​ ​ ​ ​ ​

 

   $ 11,715   $ 16,189  
           
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​