XML 31 R29.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2013
Fair Value Disclosures [Abstract]  
Fair Value Measurements
   March 31, 2013 December 31, 2012 
   Level 2 Level 2 
Commodity Swaps*  $ 2,440 $ 1,924 
Total  $ 2,440 $ 1,924 
         
*Unrealized gains or losses on commodity derivatives qualifying for hedge accounting are recorded in accumulated other 
 comprehensive income at each measurement date. The fair value of derivative contracts included in assets or liabilities for risk 
 management activities represents the amount at which the instruments could be exchanged in a current arms-length transaction  
 adjusted for credit risk of the Partnership and/or the counterparty as required under FASB ASC 820. 
Fair Value Financial Instrument
   March 31, 2013 December 31, 2012 
   Carrying Fair Carrying Fair 
   Value Value Value Value 
Long-term debt  $ 999,780 $ 1,086,938 $ 1,036,305 $ 1,118,875 
Obligations under capital lease  $ 24,455 $ 26,683 $ 25,257 $ 27,667