Subsequent Events	12 Months Ended
Dec. 31, 2011
Subsequent Events [Abstract]
Subsequent Events (Unaudited)	16. Subsequent Events (Unaudited) The following represents material events that have occurred subsequent to December 31, 2011 through the time of the Partnership’s filing its Form 10-K with the SEC: *Acquisitions* Oklahoma Oil and Gas. During January and February 2012, the Partnership acquired approximately 6,000 acres located in the Mississippian Lime oil play in Northern Oklahoma for $20.0 million. Colt. On February 2, 2012, the Partnership closed the fifth acquisition of reserves from Colt, LLC, an affiliate of the Cline Group. The Partnership paid $40.0 million and acquired approximately 26.0 million tons of coal reserves. *Distributions* On January 18, 2012, the Partnership declared a distribution of $0.55 per unit to be paid on February 14, 2012 to unitholders of record on February 3, 2012.

Subsequent Events

12 Months Ended

Dec. 31, 2011

16. Subsequent Events (Unaudited)

The following represents material events that have occurred subsequent to December 31, 2011 through the time of the Partnership’s filing its Form 10-K with the SEC:

Acquisitions

Oklahoma Oil and Gas. During January and February 2012, the Partnership acquired approximately 6,000 acres located in the Mississippian Lime oil play in Northern Oklahoma for $20.0 million.

Colt. On February 2, 2012, the Partnership closed the fifth acquisition of reserves from Colt, LLC, an affiliate of the Cline Group. The Partnership paid $40.0 million and acquired approximately 26.0 million tons of coal reserves.

Distributions

On January 18, 2012, the Partnership declared a distribution of $0.55 per unit to be paid on February 14, 2012 to unitholders of record on February 3, 2012.