Condensed Statements Of Income (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
REVENUES
Royalties	$ 4,403,655		$ 5,178,144		$ 14,120,880		$ 19,483,824
Interest and other income	35,443		45,251		81,309		98,962
TOTAL REVENUES	4,439,098		5,223,395		14,202,189		19,582,786
Costs and expenses	(1,035,095)		(956,143)		(3,089,629)		(3,067,840)
NET INCOME	$ 3,404,003		$ 4,267,252		$ 11,112,560		$ 16,514,946
Weighted-average shares outstanding	1,500,000		1,500,000		1,500,000		1,500,000
BASIC & DILUTED EARNINGS PER SHARE	$ 2.27		$ 2.84		$ 7.41		$ 11.01
Distributions declared	$ 2.60	[1]	$ 3.50	[2]	$ 7.35	[3]	$ 8.75	[4]

[1] $2.60 declared 9/13/2013 payable 10/31/2013

[2] $3.50 declared 9/7/2012 paid 10/31/2012

[3] $2.25 declared 3/8/2013 paid 4/30/2013 $2.50 declared 6/17/2013 paid 7/31/2013 $2.60 declared 9/13/2013 payable 10/31/2013

[4] $2.25 declared 3/9/2012 paid 4/30/2012 $3.00 declared 6/6/2012 paid 7/31/2012 $3.50 declared 9/7/2012 paid 10/31/2012