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Derivative Instruments (Tables)
3 Months Ended
Mar. 31, 2013
Summary of Loss Reclassified into Income for Interest Rate Contracts

The following table summarizes the loss reclassified into income for interest rate contracts for March 31, 2013 and 2012:

 

     Three Months
Ended March 31,
 
     2013      2012  

Interest rate agreements

   $ 1,872       $ 1,925