Consolidated Statements of Changes in Equity (USD $) In Thousands, except Share data	Total	Common Shares	Exchangeable Shares	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Comprehensive Income (Loss)	Accumulated Earnings	Treasury Stock	Non-controlling interests
Balance at Jun. 30, 2008		$ 339		$ 463,335	$ 65		$ 19,478		$ 11,411
Balance (in shares) at Jun. 30, 2008		33,926,495
Issuance of common stock for:
Equity offering		65		234,867
Equity offering (in shares)		6,500,000
Other				178
Other (in shares)		5,335
Stock-based compensation and related share issuances		1		4,027
Stock-based compensation and related share issuances (in shares)		48,481
Net income	41,357						38,348		3,009
Comprehensive income (loss)	(145)				(145)	(145)
Distribution to non-controlling interests									(3,450)
Dividends declared	(11,117)						(11,117)
Balance at Jun. 30, 2009		405		702,407	(80)		46,709		10,970
Balance (in shares) at Jun. 30, 2009		40,480,311
Issuance of common stock for:
Equity offering		60		276,158
Equity offering (in shares)		5,980,000
Acquisition of International Royalty Corporation		52	79,511	230,236				(917)	20,704
Acquisition of International Royalty Corporation (in shares)		5,234,086	1,806,649					22,245
Andacollo Royalty acquisition	53,428	12		53,416
Andacollo Royalty acquisition (in shares)		1,204,136
Exchange of exchangeable shares		2	(7,770)	7,768
Exchange of exchangeable shares (in shares)		176,540	(176,540)
Retirement of treasury stock	3,557
Stock-based compensation and related share issuances		3		14,102				(3,557)
Stock-based compensation and related share issuances (in shares)		249,098						74,430
Net income	29,422						21,492		7,930
Comprehensive income (loss)					46	46
Distribution to non-controlling interests									(9,772)
Dividends declared	(16,339)						(16,339)
Balance at Jun. 30, 2010	1,433,548	534	71,741	1,284,087	(34)		51,862	(4,474)	29,832
Balance (in shares) at Jun. 30, 2010		53,324,171	1,630,109					96,675
Issuance of common stock for:
Exchange of exchangeable shares		6	(31,877)	31,871
Exchange of exchangeable shares (in shares)		724,314	(724,314)
Retirement of treasury stock	(4,474)	(1)		(4,502)				4,474
Retirement of treasury stock (in shares)		(22,245)						(96,675)
Stock-based compensation and related share issuances		4		8,241
Stock-based compensation and related share issuances (in shares)		205,547
Net income	77,299						71,395		5,904
Comprehensive income (loss)					88	88
Distribution to non-controlling interests									(8,203)
Dividends declared	(23,253)						(23,253)
Balance at Jun. 30, 2011	$ 1,487,695	$ 543	$ 39,864	$ 1,319,697	$ 54		$ 100,004		$ 27,533
Balance (in shares) at Jun. 30, 2011		54,231,787	905,795