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Subsequent Events - Additional Information (Detail) (Royalty Trust Distributions, Royalty Trusts)
0 Months Ended
Jul. 25, 2013
Royalty Trust Distributions | Royalty Trusts
 
Subsequent Event  
Subsequent event, description On July 25, 2013, the Royalty Trusts announced quarterly distributions for the three-month period ended June 30, 2013. The following distributions are expected to be paid on August 29, 2013 to holders of record as of the close of business on August 14, 2013.
Expected distribution date August 29, 2013
Distributions record date August 14, 2013