Condensed Statements of Operations - USD ($)		3 Months Ended		6 Months Ended
	Jul. 13, 2018	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
REVENUES
Royalty income		$ 19,125,069	$ 14,230,174	$ 25,771,739	$ 18,990,603
Interest		26,883	7,273	64,260	13,815
Total revenues		19,151,952	14,237,447	25,835,999	19,004,418
EXPENSES
Expenses		280,497	240,493	648,696	535,539
Net income		$ 18,871,455	$ 13,996,954	$ 25,187,303	$ 18,468,879
WEIGHTED AVERAGE NUMBER OF UNITS OUTSTANDING		13,120,010	13,120,010	13,120,010	13,120,010
Net income per unit (Note 2) (in dollars per unit)		$ 1.4384	$ 1.0668	$ 1.9198	$ 1.4077
Distributions declared per unit (Note 3) (in dollars per unit)	$ 0.22	$ 0.2200	$ 0.1600	$ 0.6700	$ 0.7100