Subsequent Events	12 Months Ended
Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events The following represents material events that have occurred subsequent to December 31, 2015 through the time of the Partnership’s filing of its Annual Report on Form 10-K with the SEC: Distribution Declared On February 12, 2016, the Partnership paid a distribution of $0.45 per unit to unitholders of record on February 5, 2016. Reverse Unit Split On January 26, 2016, the board of directors of our general partner approved a 1-for-10 reverse split on our common units, effective following market close on February 18, 2016. Pursuant to the authorization provided, the Partnership completed the 1-for-10 reverse unit split and its common units began trading on a reverse unit split-adjusted basis on the New York Stock Exchange on February 18, 2016. As a result of the reverse unit split, every 10 units of issued and outstanding common units were combined into one issued and outstanding common unit, without any change in the par value per unit. The reverse unit split reduced the number of common units outstanding from 122.3 million units to approximately 12.2 million units. All units and per unit data included in these consolidated financial statements have been retroactively restated to reflect the reverse unit split. Oil and Gas Royalty Properties Sale In February 2016, the Partnership sold royalty and overriding royalty interests in several producing properties located in the Appalachian Basin for $36.6 million in net cash proceeds and recorded a gain of $20.3 million. The sale included royalty and overriding royalty interests in approximately 765 gross producing wells as of December 31, 2015 and approximately 10% of our estimated proved reserves as of December 31, 2015, or 1,094 MBoe. The effective date of the sale was January 1, 2016. Aggregate Royalty Properties Sale In February 2016, we sold the aggregates reserves and related royalty rights at three aggregates operations located in Texas, Georgia and Tennessee, which comprised approximately 27%, or 139 million tons, of our estimated aggregates reserves as of December 31, 2015 for $9.8 million in net cash proceeds and recorded a gain of $1.6 million. The effective date of the sale was February 1, 2016.

Subsequent Events

The following represents material events that have occurred subsequent to December 31, 2015 through the time of the Partnership’s filing of its Annual Report on Form 10-K with the SEC:

Distribution Declared

On February 12, 2016, the Partnership paid a distribution of $0.45 per unit to unitholders of record on February 5, 2016.

Reverse Unit Split

On January 26, 2016, the board of directors of our general partner approved a 1-for-10 reverse split on our common units, effective following market close on February 18, 2016. Pursuant to the authorization provided, the Partnership completed the 1-for-10 reverse unit split and its common units began trading on a reverse unit split-adjusted basis on the New York Stock Exchange on February 18, 2016. As a result of the reverse unit split, every 10 units of issued and outstanding common units were combined into one issued and outstanding common unit, without any change in the par value per unit. The reverse unit split reduced the number of common units outstanding from 122.3 million units to approximately 12.2 million units. All units and per unit data included in these consolidated financial statements have been retroactively restated to reflect the reverse unit split.

Oil and Gas Royalty Properties Sale

In February 2016, the Partnership sold royalty and overriding royalty interests in several producing properties located in the Appalachian Basin for $36.6 million in net cash proceeds and recorded a gain of $20.3 million. The sale included royalty and overriding royalty interests in approximately 765 gross producing wells as of December 31, 2015 and approximately 10% of our estimated proved reserves as of December 31, 2015, or 1,094 MBoe. The effective date of the sale was January 1, 2016.

Aggregate Royalty Properties Sale

In February 2016, we sold the aggregates reserves and related royalty rights at three aggregates operations located in Texas, Georgia and Tennessee, which comprised approximately 27%, or 139 million tons, of our estimated aggregates reserves as of December 31, 2015 for $9.8 million in net cash proceeds and recorded a gain of $1.6 million. The effective date of the sale was February 1, 2016.