Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Fair Value Derivative Instrument

Net assets measured at fair value on a recurring basis are summarized below (in thousands):

	September 30, 2013 Level 2		December 31, 2012 Level 2
Commodity Swaps*	$	491	$	1,924
Total	$	491	$	1,924

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* Unrealized gains or losses on commodity derivatives qualifying for hedge accounting are recorded in AOCI 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, 2013				December 31, 2012
	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt	$	1,102,357	$	1,162,192	$	1,036,305	$	1,118,875
Obligations under capital lease	$	22,822	$	24,381	$	25,257	$	27,667