Commitments and Contingencies Commitments and Contigencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Supply Commitment

The following table presents gross volume information, including our proportionate share of PDCM, related to our long-term firm transportation, sales and processing agreements for pipeline capacity:

	For the Twelve Months Ending March 31,
Area	2014		2015		2016		2017		2018 and Through Expiration		Total		Expiration Date
Volume (MMcf)
Piceance Basin	32,114		15,522		10,277		9,319		31,653		98,885		May 31, 2021
Appalachian Basin	20,238		25,028		23,923		24,795		162,165		256,149		September 20, 2025
NECO	2,100		1,825		1,830		1,375		—		7,130		December 31, 2016
Utica Shale	1,541		2,623		2,738		2,738		17,115		26,755		June 30, 2023
Total	55,993		44,998		38,768		38,227		210,933		388,919
Dollar commitment (in thousands)	$	26,998	$	19,529	$	16,612	$	16,026	$	69,428	$	148,593