Significant Accounting Policies (Policy)	3 Months Ended
Significant Accounting Policies (Policy)	Mar. 31, 2014
Significant Accounting Policies [Abstract]
Basis Of Presentation	Basis of Presentation and Principles of Consolidation The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles in the United States (“U.S. GAAP”) for complete annual financial statements. During interim periods, the Partnership follows the accounting policies disclosed in its Annual Report on Form 10-K for the year ended December 31, 2013 (“2013 Annual Report”), filed with the Securities and Exchange Commission (“SEC”). The unaudited consolidated financial statements for the three months ended March 31, 2014 and 2013 include all adjustments we believe are necessary for a fair statement of the results for the interim periods. The unaudited consolidated financial statements include the accounts of the Partnership, its 100% owned subsidiaries, and investments we are deemed to control. All significant intercompany transactions have been eliminated upon consolidation. Prior period amounts have been revised to conform to current period presentation. Operating results for the three months ended March 31, 2014 are not necessarily indicative of the results that may be expected for the full year ended December 31, 2014. These unaudited consolidated financial statements and other information included in this quarterly report should be read in conjunction with our consolidated financial statements and notes thereto included in our 2013 Annual Report. During the three months ended March 31, 2014, we recorded out-of-period adjustments related to periods from the three months ended December 31, 2012 through the three months ended December 31, 2013 that decreased our income before taxes for the three months ended March 31, 2014 by $1.4 million. These adjustments include a $1.9 million decrease in revenue, a $0.3 million increase in production expenses, and a $0.2 million increase in depletion expense. After evaluating the quantitative and qualitative aspects of the errors, we concluded our previously issued financial statements were not materially misstated and the effect of recognizing these adjustments in the consolidated financial statements for the three months ended March 31, 2014 is not material to our results of operations, financial position, or cash flows.
Accounting Policy Updates/Revisions	Accounting Policy Updates The accounting policies followed by the Partnership are set forth in Note 2 – Summary of Significant Accounting Policies of the Notes to Consolidated Financial Statements in our 2013 Annual Report. The following addition to our policies was made during the three months ended March 31, 2014 to give effect to the GP Buyout Transaction.
Deferred Class B Unit Obligation	Deferred Class B Unit Obligation Our deferred class B units obligation is classified as a non-current liability and is remeasured each reporting period based on the fair value of the liability. Accordingly, any changes in fair value are included in earnings and reported as a component of Other income, net within our consolidated statement of operations. See Note 11 – Deferred Class B Unit Obligation.