Consolidated Statements of Operations and Comprehensive Income - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Consolidated Statements of Operations and Comprehensive Income
Revenue (Note 8)	$ 342,952	$ 305,240	$ 615,856	$ 498,819	$ 423,056
Costs and expenses
Cost of sales (excludes depreciation, depletion and amortization)	52,329	46,760	92,898	83,890	77,535
General and administrative	15,163	14,244	28,387	30,195	30,488
Production taxes	4,412	2,756	6,743	3,824	4,112
Exploration costs		563	563	5,190	7,158
Depreciation, depletion and amortization	99,685	94,245	183,569	175,434	163,056
Impairment of royalty interests				1,341
Total costs and expenses	171,589	158,568	312,160	299,874	282,349
Gain on sale of Peak Gold JV interest		33,906	33,906
Operating income	171,363	180,578	337,602	198,945	140,707
Fair value changes in equity securities	(1,350)	2,158	6,017	1,418	(6,800)
Interest and other income	1,610	1,034	2,443	2,046	2,320
Interest and other expense	(2,787)	(3,454)	(6,419)	(9,813)	(29,650)
Income before income taxes	168,836	180,316	339,643	192,596	106,577
Income tax (expense) benefit	(30,008)	(13,654)	(36,867)	3,654	(17,498)
Net income and comprehensive income	138,828	166,662	302,776	196,250	89,079
Net (income) loss and comprehensive (income) loss attributable to non-controlling interests	(489)	166	(244)	3,093	4,746
Net income and comprehensive income attributable to Royal Gold common stockholders	$ 138,339	$ 166,828	$ 302,532	$ 199,343	$ 93,825
Net income per share attributable to Royal Gold common stockholders:
Basic earnings per share	$ 2.11	$ 2.55	$ 4.61	$ 3.04	$ 1.43
Basic weighted average shares outstanding	65,560,468	65,542,326	65,546,400	65,523,024	65,394,627
Diluted earnings per share	$ 2.10	$ 2.54	$ 4.60	$ 3.03	$ 1.43
Diluted weighted average shares outstanding	65,624,567	65,625,965	65,627,591	65,643,390	65,505,535
Cash dividends declared per common share	$ 0.65	$ 0.58	$ 1.18	$ 1.11	$ 1.05