XML 33 R28.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2012
Fair Value Disclosures [Abstract]  
Fair Value Measurements
   September 30, 2012 December 31, 2011 
   Level 2 Level 2 
Commodity Swaps*  $ 4,214 $ (2,720) 
Total  $ 4,214 $ (2,720) 
         
*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
   September 30, 2012 December 31, 2011 
   Carrying Fair Carrying Fair 
   Value Value Value Value 
Long-term debt  $ 970,331 $ 1,035,033 $ 798,409 $ 882,500 
Obligations under capital lease  $ 26,049 $ 28,668 $ 28,367 $ 27,637