Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 37,707	$ 46,539
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	67,273	66,676
Non-cash employee stock compensation expense	3,660	1,289
Gain on distribution to non-controlling interest		(259)
Amortization of debt discount	7,624	7,138
Impairment of royalty and stream interests	28,339
Tax benefit of stock-based compensation exercises	(74)	(320)
Deferred tax benefit	(34,199)	(13,002)
Changes in assets and liabilities:
Royalty receivables	7,168	8,175
Prepaid expenses and other assets	4,471	12,329
Accounts payable	(1,742)	194
Foreign withholding taxes payable	(2,001)	(11,533)
Income taxes payable (receivable)	25,191	(4,551)
Other liabilities	4,777	2,411
Net cash provided by operating activities	148,194	115,086
Cash flows from investing activities:
Acquisition of royalty and stream interests	(60,341)	(79,692)
Tulsequah stream termination	10,000
Other	(71)	227
Net cash used in investing activities	(50,412)	(79,465)
Cash flows from financing activities:
Net proceeds from issuance of common stock	775	561
Common stock dividends	(41,712)	(39,706)
Purchase of additional royalty interest from non-controlling interest		(11,522)
Debt issuance costs		(1,284)
Distribution to non-controlling interests	(1,227)	(1,913)
Tax expense of stock-based compensation exercises	74	320
Net cash used in financing activities	(42,090)	(53,544)
Net increase (decrease) in cash and equivalents	55,692	(17,923)
Cash and equivalents at beginning of period	659,536	664,035
Cash and equivalents at end of period	$ 715,228	$ 646,112