Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 98,309	$ 77,299	$ 29,422
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	75,001	67,399	53,793
Non-cash employee stock compensation expense	6,507	6,494	7,279
Gain on distribution to non-controlling interest	(3,725)	(3,258)	(5,891)
Restructuring on royalty interests in mineral properties	1,328
Tax benefit of stock-based compensation exercises	(6,348)	(1,325)	(1,638)
Deferred tax expense (benefit)	1,571	(5,136)	(7,536)
Other	2,117		371
Changes in assets and liabilities:
Royalty receivables	(5,118)	(8,465)	(19,055)
Prepaid expenses and other assets	88	2,247	4,035
Accounts payable	530	(930)	(10,742)
Income taxes payable (receivable)	(7,179)	5,527	(2,697)
Other liabilities	(917)	7,105	1,030
Net cash provided by operating activities	162,164	146,957	48,371
Cash flows from investing activities:
Acquisition of royalty interests in mineral properties	(276,683)	(280,009)	(232,996)
Acquisition of International Royalty Corporation, net of cash acquired			(270,233)
Acquisition of available for sale securities		(28,574)
Change in restricted cash-compensating balance			19,250
Proceeds on sale of inventory-restricted	5,514	5,097	3,647
Deferred acquisition costs	(11)	(117)	(120)
Other	(176)	(2,660)	(86)
Net cash used in investing activities	(271,356)	(306,263)	(480,538)
Cash flows from financing activities:
Net proceeds from debt	457,023	18,532	253,407
Repayment of debt	(326,100)	(41,900)	(55,263)
Net proceeds from issuance of common stock	271,536		276,839
Common stock dividends	(29,504)	(22,130)	(14,628)
Proceeds from foreign exchange contract			4,101
Distribution to non-controlling interests	(8,810)	(7,158)	(3,647)
Tax benefit of stock-based compensation exercises	6,348	1,325	1,638
Other		(54)
Net cash provided by (used in) financing activities	370,493	(51,385)	462,447
Net increase (decrease) in cash and equivalents	261,301	(210,691)	30,280
Cash and equivalents at beginning of period	114,155	324,846	294,566
Cash and equivalents at end of period	$ 375,456	$ 114,155	$ 324,846