Condensed Statements of Income (USD $)	3 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Revenues
Royalty income	$ 501,300	$ 2,528,417
Interest income	2,135	390
Total revenues	503,435	2,528,807
Expenses	366,217	326,418
Net income	$ 137,218	$ 2,202,389
Number of units outstanding	13,120,010	13,120,010
Net income per unit (Note 2) (in dollars per unit)	$ 0.0105	$ 0.1679
Distributions declared per unit (Note 3) (in dollars per unit)		$ 0.0800