Commitments And Contingencies (Details) (USD $)	12 Months Ended						12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 2006 Gulf Coast Acquisition [Member]	Dec. 31, 2011 2006 Gulf Coast Acquisition [Member]	Dec. 31, 2006 2006 Gulf Coast Acquisition [Member]	Dec. 31, 2012 Prize [Member]	Apr. 20, 2012 Prize [Member]	Dec. 31, 2012 Predecessor [Member]	Dec. 21, 2010 Predecessor [Member]
Business Acquisition, Contingent Consideration [Line Items]
Quarterly administration fee equal to percentage of adjusted EBITDA due to QRM	3.50%
Escrow deposit related to abandonment and remediation obligations		$ 10,700,000	$ 10,700,000	$ 10,700,000
Period of time escrow in effect after abandonment and remediation obligations		3 years
Maximum date escrow will be returned		December 31, 2026
Issued letter of credit in addition to escrow		23,500,000	21,000,000	3,000,000
Addtional line of credit issued each year to seller		3,000,000
Estimated environmental liability					1,900,000	1,891,000
Operating lease commitment	26,800,000
Operating lease termination year	2022						December 31, 2012
Percentage of future minimum rental payments related to office space.							87.00%
Rental expense								$ 800,000