Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 15,281	$ 25,294
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	22,400	21,500
Non-cash employee stock compensation expense	1,613	2,095
Gain on distribution to non-controlling interest		(88)
Amortization of debt discount	2,340	2,192
Tax expense (benefit) of stock-based compensation exercises	28	(773)
Deferred tax (benefit) expense	(2,857)	1,746
Changes in assets and liabilities:
Royalty receivables	2,193	(10,789)
Prepaid expenses and other assets	10,297	(249)
Accounts payable	(725)	53
Foreign withholding taxes payable	(8,256)	2
Income taxes (receivable) payable	(9,010)	10,309
Other liabilities	2,183	2,250
Net cash provided by operating activities	35,487	53,542
Cash flows from investing activities:
Acquisition of royalty and stream interests	(48,028)	(120,035)
Proceeds on sale of inventory - restricted		118
Other	(24)	(17)
Net cash used in investing activities	(48,052)	(119,934)
Cash flows from financing activities:
Net proceeds from issuance of common stock		1,711
Common stock dividends	(13,010)	(8,949)
Distribution to non-controlling interests	(533)	(562)
Tax expense (benefit) of stock-based compensation exercises	(28)	773
Net cash used in financing activities	(13,571)	(7,027)
Net decrease in cash and equivalents	(26,136)	(73,419)
Cash and equivalents at beginning of period	664,035	375,456
Cash and equivalents at end of period	$ 637,899	$ 302,037